Mark
R.
Horowitz
and
Thomas
C.
Rogers
The
Distinction
Between
Economic
Development and
Economic
Growth:
Implications
for
North
Carolina
Development
Policy
Two
widely recognizedeconomic
theoriesat-tempt
toexplain the process ofdevelopment
in aninterregional context.
Trade
theory (and traditional neoclassicalgrowth
theory in general) posits thateconomic
growth
is both the necessaryand
suf-ficient condition for
development
of a lessdevel-oped
region.The
theory ofunequal
exchange,
on
the other hand,
contends
that whileeconomic
growth
isnecessarytothedevelopment
ofa region,it is not a sufficient condition to bring about true
development, defined as increases in the overall welfare of the region's population.
This article attempts to break
down
thedeter-minantsof
wages
into aneconomic
growth
compo-nent
and
aneconomic
development
component
assuggested
by these theories. It thenshows
theimportance of the
economic
development
compo-nent in explaining cross-state
wage
differentials.'The
state ofNorth Carolina has attemptedtofurtherits
development
through growth-related policies.The
analysisfound
herein suggests theneed
for areassessment of North Carolina's existing
develop-ment
policies.Trade Theory and
Development
Models:
Unequal
Exchange
In the tradetheory model,
one
region isassumed
to
be
a well-developed, capital-intensive area,and
the other a less-developed, labor-intensive region.
The
capital-intensive regioncan
produce
com-modities
which
require a largeamount
of capital inputs at a relative cost advantage; the labor-intensive region canproduce commodities which
require a large
amount
of labor at a relatively lowcost.
This comparative
advantage
will inevitably resultin trade
between
thetwo
regions. In the long run,production specialization will
occur
as the regionsbegin to increase trade relations
and
concentratetheir
commodity
production in the area of theiradvantage
in factorendowments.
The
equalization of pricesforconsumer goods
and
productioninputswill also result as adirect effect of thisinterregional trade. This
phenomenon
will allow residents ofthe less-developed, labor-intensive region to increase their satisfactionand
welfare by raising the realwage
levels in the region and, in sodoing, increaseconsumption.
Thisincreaseddemand
forconsumer
goods
will benefit theeconomy
of theless-developed region,
and
convergence
between
regionswill inevitably resultinthelong run (Kreinin 1971; Lefeber 1966;
Olson
1971).The
other interregionaldevelopment
model, bas-edon
the theory of unequal exchange, posits that the natural play of market forces tends to increase rather than decrease inherent regional inequalities.As
interregional trade occurs,alleconomic
activitieswhich
in the less-developed region bring a largerthan averagereturn will clusterin certain localities,
leaving other areas of the region in a relatively
disadvantaged position (Myrdal 1952).
The
lowertwo-thirds of the population in the less
developed
region get progressivelypooreratthe
expense
oftheupper
third,who
derive theirincome
from the professional, managerial,and
corporate sectors of theeconomy.
The
implicitdevelopment
strategyassociated with this theory of continuing
in-terregionaldivergenceisthat
government
ofthelessdeveloped region
must
assume
an active role inimpeding
thesteadily increasingforms
ofinequalityby devising an
economic
system
that will achieveeconomic
growth
in the region while at thesame
time increasing equality in the distribution of the factorsofproduction
(Friedmann
and
Sullivan1975)Using these conflictingtheories, adistinctioncan be
made
between
theconcepts
ofeconomic
growth
and
economic
development. This distinction iscritical in understanding
why
balanced,broadly-based development
has notoccured
in all areas of theUnited States. It alsohelps ustounderstandtheimplications of North Carolina's
development
policy.
Mark
R. HorowitziscurrentlycompletingtheMRP
at the University ofNorthCarolina,Chapel
Hill, withan
emphasis
inhousing
and
manpower
planning.He
isemployed
by
the Mayor's Office ofManpower
Resources, Baltimore, Maryland, as Coordinatorof
Labor Market
InformationTechnlcal Services.Thomas
C.Rogers
received theMRP
from theUniversity ofNorth Carolina,
Chapel
Hill, in May,of 1977, withconcentrationsineconomic
development
and
manpower
planning. Currentlyhe
isaProgram
Analyst for the Planning
and
Budget
Staff of theNorth Carolina
Development
Policy
The
state of North Carolinacan
be viewed as aless-developed (that is, labor-intensive
and
low-wage)
region in the interregional contextwhich
we
haveestablished.
As
part ofthesoutheastern region ofthe UnitedStates, North Carolinais relativelylessdeveloped than the northern U.S.
The
state'sin-dustry is
dominated
by textile, furniture,and
tobac-co
manufacturing, all ofwhich
are labor-intensivesystems
of production. North Carolina ranksforty-fifth of the forty-eight contiguous states in average weekly earnings
(Crow
1975).North Carolina's
development
policyiscomposed
of
two
major elements. First, efforts are beingdirectedtowards
encouraging
abetter industrial mixin the state through recruitment of
high-wage
in-dustries.
Second,
North Carolinaworkers
arebeingencouraged
tobecome more
productivethroughthe provision of skill trainingand
efforts to raise the general education level in the state.The
North CarolinaDepartment
of NaturalResources
and
Community
Development
operatesfour
programs
intended toupgrade
the industrialmixin NorthCarolina.
Food
IndustriesDevelopment
Units
promote commercial
fishing, agriculture,and
other food industries by providing information
regarding potential locations, recruiting industries
and
investors,and
by providing technical assist-ance.The
TouristPromotion
Unit offers tourist informationand
promotes
advertisingcampaigns
which
highlight the state's cultural, historic,and
recreational attractions.
The
IndustrialDevelop-ment
Unitconducts
promotional activities toen-courage
firmstolocate orexpand
theiroperationsinNorth Carolina. This organization provides site
location information
and
other assistancesuch
as Jocal labor market data, building costsand
regulations,
and
available fiscaland
financialin-ducements
to potential clients.The
International"Economic
growth
isviewed
by
proponents
of
neoclassical
eco-nomics
as the
necessary
and
suf-ficient
condition
for
the
development
of
a
less
developed
region."
Development
Unit provides thesame
informationtoencourage
foreign investment,and
conducts
promotionsto
encourage
theexportofcommodities
produced
in North Carolina (Reid 1977).Second,
the Apprenticeship Division of theDepartment
of Laborconducts
apprenticeshipcer-tification
programs
in North Carolina.These
programs
are voluntarytrainingagreements
reach-edbetween
anemployerand
aworkerwhereon-the-job training is provided ata graduated pay scaleto the worker,
who
agrees towork and
learn a par-ticular skill or trade. State certification of thesearrangements
protects the rights of both parties toTextile millspredominatein North Carolinamanufacturing. PhotocourtesyofSouthern Exposure
the
agreement and
helpsto insure the qualityoftheapprenticeship
programs
(Reid 1977).Third, the North Carolina
Community
College system places a high priorityin upgradingthe labor forcesand
improvingemployment
opportunities inthe state.
The
system's job-orientedprograms
in-clude vocational
and
technicaldegree
programs, occupational extension,and
occupational training forthe disadvantagedand
handicapped.The
primesponsors
subcontracttoprovideclassroom
training, job orientationand
motivation classes,and
specialeducation (Reid 1977).
The
Concepts
ofEconomic
Growth and
Economic
Development
Economic
growth refers to the quantitativechanges
in the spatialand
economic
structureofa statewhich
result in increased factorutilizationand
commodity
production. It isconcerned
within-creased production in a region regardless of the distributive implication of this growth.
The
processes of industrialization
and
urbanization typicallycharacterize successfuleconomic
growth.Economic
growth is viewed byproponents
ofneoclassical
economics
as the necessaryand
suf-ficient condition for thedevelopment
of aless-developed region.
As
a region uses its comparativeadvantage
toproduce
labor-intensivecommodities
and
engages
intrade with amore
developed region, residents' satisfactionand
welfarewill increaseand
convergence
in the level ofdevelopment
ofthetwo
regions will result in the long run.
Economic
development
refers to themore
qualitative
changes
in theeconomic
structure of a region,such
as the culturaland
psychological outlooksofthe region's population, the organization of technology,and
thechanges
inpower
relations within a regionand between
regions.Economic
majority of a state's population to participate
meaningfully in a state's
economy.
Proponents
of the diverging interregionaldevelopment
model
believe that while
economic
growth
is a necessarycondition for the successful
development
ofaless-developed region, it is not a sufficientcondition. In
order for
development
to occur, according to this theory, the benefits of increasedcommodity
production
must
be widely distributedamong
thepopulation of an
underdeveloped
region. Propo-nents of this theorydo
not believe that increasedinterregional trade will automatically
improve
the welfare of the lessdeveloped
region'seconomy.
Rather,they
contend
thateconomic
growth
policiespursued
alone will result in greater inequality."Economic
development
isconcerned
witlithe
ability
of
a
broad
majority
of
a
state's
population
to
participate
meaningfully
ina
state's
economy."
It is worthwhile to
examine
some
oftheassump-tions behind North Carolina's current
development
efforts. With regard to the efforts to
change
the industrialmixinthestate,itisassumed
thatnew
jobsin
higher-wage
industrieswill provide anincreaseinthe
demand
for skilledworkers. Further, itisassum-ed that this increased
demand
will be sufficientto createpressureforhigherwages
inthosejobswhich
presently exist in alocal labormarket.
These
higherwages
for workers will in turn createmore
demand
for
consumer goods
in the labor market, causingpositive
second round
multiplier effects.With regard to the state's efforts to raise the productivity of North Carolina workers, the follow-ing
assumptions
are applicable. First, it isassumed
thatthere arejobs available requiring specificskills,
and
that the lack of these skills is presently theprimary barrier
between
the availablework
forceand
thesejobs.Second,
theeducationand
trainingprovided by the
programs
instituted by the stategovernment
arepresumed
to be capableofmaking
workers
more
productive.Finally,thereisanimplicitassumption
that productivity increases will lead directly to increased wages.Generally, the
development
policies initiated bythe state of North Carolina have
been
designed to follow the neoclassical economists' theory ofin-terregional development.
The
stategovernment
haschosen
to use the existence of lowwages
in North Carolina toencourage
the relocation of industryfrom other areas of the United States
and
theexpansion of North Carolina industry.
By
capitaliz-ingon
thiscom
parativeadvantageof low laborcostsand
by improvingthe productivityofitsworkers,thestate
hopes
to induce a better industrialmix
and
therefore indirectly raise the earnings
and
thus the welfare of the residents of North Carolina. In thissense, the state of North Carolina is relying
on
economic
growth
priorities to raise itfrom
thecondition of a less-developed region to that of a
more-developed
region.Implications
ofNorth
Carolina's Policy
There
are indications,however,thatthesepolicies aremisguided. Studies byMalizia (1975)and
Maliziaet al. (1975) indicate the
inadequacy
of thesepolicies to raise the level of earnings for North Carolina workers. In the
American
economy,
the great majorityofpeoplemake
theirlivingbyworking
for
wages
and
salaries. Since almostalltransactionsare
based
on
money
exchange,
these earnings provide people with the solemeans
of satisfying their needs.We
can therefore observe the impor-tance of earnings in defining the level of livingpossible for
any
group
ofNorthCarolinians.As
realearnings rise, workers are providedwith the
means
to satisfya greater portion oftheirdesires
and needs
through
exchange
in the market.In
examining
the earnings potential provided bythe state's
economy,
Malizia ef al.examine two
factors: the types of industry present in the North Carolina
economy
that affect earnings;and
the specificwage
levels paid by those industries. Inorder to take both ofthese factors into
considera-tion, Malizia ef al.
used
a modified shift-share analysis.Shift-share analysis separates differences in
average
weekly
earnings into that portionat-tributable to the relative
predominance
of various industries in North Carolina (industrial mix effect)and
thatportion attributable todifferencesinwages
paid by those industries in thestate (local effect). It
was
found
that approximately63%
of thegap
between weekly
earnings in North Carolinaand
those in the United States as a
whole
was
theresultof the localeffect in theyears 1963, 1969,
and
1971 (Malizia 1975). North Carolinaworkers
earned lessthan
U.S.
workers notbecause
of the type of industries located in North Carolina, but largelybecause
those industriespaidlowerwages
toNorthCarolina workers than they paid workers in other
states. Furthermore, productivity differences
be-tween
North Caroliniansand
United Statesworkers cannotaccount
for this earnings gap. North Carolina has a high concentration of low-productivity industries, but the studiesshowed
thatNorth Carolinaworkers
produce
on
theaverage$.22more
per dollar received thancomparable
U.S.workers (Malizia ef al. 1975).
As
we
have noted, there are basic disagreements concerning the process ofeconomic
development.Some
economists
insistthatgrowth
inevitablyleads toincreasesinwelfare;otherswarn
thatgrowth
may
cause
greater inequality. In this article,we
assume
thattheaim of
economic
development
istoimprove
the standard ofliving fora broad cross-section ofa region's population; therefore, a strategy
which
brings increased
economic
activity but fails toreduce inequality is not acceptable.
"This
model
implies
that
high
wages
are
associated with
relative
income
and
education
equality,
and
with
a
more
effectively
organized
trade
union movement..."
Indicators
ofGrowth and Development
We
have posited that the distinctionbetween
economic growth and
economic
development
isimportant in explaining the existence
and
per-sistence of regional inequalityin the United States. This research empirically attempts to relatein-dicators of
growth
and
development
towage
levelsin a cross-state analysis.
Dudley
Seers haswrittenthat poverty, inequality,and
unemployment
aregood
indicators ofthelevelof
development
in a region at a given pointoftime(Seers1973).
These
indicatorsaredirectlyrelated to the distributive principles associated with thecon-cept of
economic
development. ArghiriEmmanuel
states that while industrialization, technologicaladvances
and
capital accumulation provide necessary conditions for the successfuldevelop-ment
of a region, risingwages
providethesufficient condition.He
believes thatdevelopment
in a capitalist marketsystem cannot
occur until realwages
begin to rise steadily, since the process ofdevelopment
relieson
thegrowth
ofconsumption
rather than saving.
Emmanuel
claimsthatincreasedtrade union pressure will drive
up
the acceptablelevel of real
wages
and
theminimum
acceptable standardoflivingand,insodoing,cause
anincreaseina region'slevelof
development
(Emmanuel
1972).North Carolina's current policy is
aimed
ateconomic growth and
improving the industrial mixofthe
economy, and
shift-share analysis hasshown
thatthe majorityofthevariation in
wage
levelsinthe state is related to factors other than the IndustrialMix Effect.
We
have thereforeexamined
the ex-planatorypower
of Seers'and Emmanuel's
theories with regard to those variations inwages
which
are not explained by industrial mix. In order toac-complish this task, it
was
necessary to developindicators of
economic
development
as defined by Seersand
Emmanuel. These concepts
arecomplex;single referents are inadequate to
measure them
fully.
The
empirical analysis thereforetookon
a two-stage design.The
firststepwas
togathera largeset ofvariableswhich
seemed
tomeasure
theconcepts suggested
by Seers
and
Emmanuel.
Indicators of income, ofeducational inequality,
and
of povertywere
gathered in order to represent Seers' concepts.
These
included: Inequality1. Black
Median Income
as a Proportion of WhiteMedian Income
2. Black
Median
Educationasa Proportion ofWhiteMedian
Education3. Gini Coefficient of
Income
Distribution^4.
Median
Education Poverty1. Percent
Below
PovertyIncome
Unemployment
1. Percent
Unemployed
Indicators of union organizations
and
activitywere
gathered in order to representEmmanuel's
major concept.
These
included:Union
Activityand Worker
Organization1. Percent of Manufacturing
Workers
who
areMembers
ofUnions
(Stroup 1975)2.
Number
ofWorkers
involved inWork
Stoppages
per 1000
Workers
(NationalLabor
RelationsBoard
1973)3. Presence of Right-to-Work Legislation (Stroup
1975)
In addition, a
number
of variablesmore
closely related to traditional concepts ofeconomic
growth
were
collected.These
included both directand
indirect measures,
such
as:Productivity
1. Value
Added
perWorker
Hour
2. Value
Added
perWage
DollarUrbanization
1. Percent of Population in
Urban
AreasFinally, data
on government
involvementin social welfare expenditureswas
collected, including:Government
Expenditures1. Per Capita Expenditures
on
Education 2. Per Capita Expenditures on Public WelfareUnless otherwise noted, the data
was
collectedGini of income
Black/white income
Black/white education
%
below povertyMedian education
%
unemployed%
unionizedWork
stoppages/1 000 workers Right-to-work law%
urbanEducationexp. /capita Welfare exp./capita Valueadded/wagedollar
Valueadded/hour worked
Figure 1
Factor Loadings
FACTOR
FACTOR
FACTOR
FACTOR
FACTOR
1 II III
IV V
-.721 .339 .007 .166 .030 .194 .548 .503 -.111 -.296 .809 .092 .242 .062 .070 -.655 .116 .469 -.024 -.044 .707 -.036 .537 .125 .095
.071 .116 -.043 .077 .778 .057 .925 .306 .071 .198 -.653 .738 -.178 .341 .016
-.311 -.531 -.237 .162 -.113 -.030 .177 .674 .212 .041 .407 -.006 .662 .263 .352 .074 .081 .668 -.030 -.128 -.090 -.006 .032 .921 .014
.161 .312 .289 .871 .182
Factor Analysis
Factoranalysisisuseful in
combining
theinforma-tion provided by a
number
of variables w/hichmeasure
closely related concepts.The
techniquedefines a
new
variablewhich
isalinearcombination
ofa
number
ofother variablesbased on
the patternof the correlations. It is
assumed
that thenew
variabledefined byfactor analysis isresponsiblefor
the interrelations of the original variables. Factor analysis also separates into distinct factors those
groups
ofvariableswhich
seem
tobe influencedbydifferent underlying forces.
In the context of this article, factor analysis
was
used
to testwhether
socialwelfare-related variablesgroup
identifiably along thedimensions suggested
by Seers
and
Emmanuel
while remaining distinctfromaset of
economic
growth
referents.The
indicesgenerated
by
the factor analysis are thenused
to predict differences inwage
levelsbetween
states.Five
independent
factorswere
generated by the factor analysis. Figure 1 gives the results of thisphase
of the research.The
loadings of individual variableson
the factors canbe
interpreted as the correlation of thatvariable with the factor (Nieefa/.1975).
if
one
assumes
that loading of less than anabsolute valueof.500
denotes
marginalcontribution ofthe variabletothefactor,thecolumns
ofFigure 1can
be
simplifiedand
amore
definite patternemerges.
Two
factorsseem
toaccount
for thedimensions
hypothesized by Seers.
These
are Factors Iand
V.Factor I is
most
closely related to thedegree
of
income and
educational inequalityand
to theper-cent of the population
below
the poverty line:Ratio of Black/White Education
809
Gini Coefficient ofIncome
-.721Median
Education 707Percent
below
Poverty-655
Factor
V
loads highlyon
onlyone
variable;Percent
Unemployed
778These
two
factorsmeasure
Seers'economic
development concepts
in that Factor I is a povertyand
inequality scale while FactorV
is clearly anunemployment
indicator.All ofour
measures
ofUnion
Activityhave
loaded together in Factor II along with the Right-to-WorkLegislation variable.
Our
second
indexon income
disparity also loadedon
this factor:Percent Unionized 925
Work
Stoppages/1OOOWorkers
738 Right-to-Work Legislation --531 Ratio of Black/WhiteIncome
548Factor11 represents thelevel oftradeunion pressure
as discussed by
Emmanuel.
Factor III
seems
to bemost
clearly related toUrbanization. Urbanization is clearly associated
with the traditional
measures
of theeconomic
growth
process discussed earlier.However,
thisfactor also includes
measures
ofGovernment
Ex-penditures
on
Educationand
Welfareand
ameasure
of
Income
Disparity.These
variables relate to differences in the nature ofsocio-economic
in-stitutions,
which
aremore
closely associated withdevelopment
theory thangrowth
theory.The
varibles associated with Factor 111 are:Percent Urbanized 674
Education Expenditures/capita 662 Welfare Expenditures/capita 669
Ratio of Black/White
Income
503
Finally, the
two measures
of productivity loadtogether
on
a single factor. Factor IV is thereforeclearly related to traditional theories of
economic
Value
Added
perWage
Dollar 921Value
Added
perHour
Worked
871Examining
our results,we
find three factors related to theories ofeconomic
development and
two
factorsmore
closelyassociatedwith theoriesofeconomic
growth.The
factorsseem
internallycon-sistent. In Factor I, increasing equality is directly related to the decreasing prevalence of poverty, as
would
be expected. In Factor II, increasing unionactivity is inverselyrelated to the
presence
ofRight-to-Work
legislation. Right-to-work lawscommonly
discourage
and impede
organizationofworkers
into unions. Factor IIIshows
direct relationshipsbetween
urbanizationand government
expendituresin the areas of education
and
social welfare. InFactor IV, the
two measures
of productivity are directly related toone
another. Since onlyone
measure
ofunemployment
is included in Factor V,no
internal inconsistencies exist.The
factors represent variableswhich
aredefinedby factor analysis during the analysis of the data.
They
areassumed
to be related to the underlyingforces
which
influence the values of the original variablesincluded intheanalysis.The
techniquenot only defines the structureand
strength of theseinterrelationships, but also defines a value of the
new
variable foreach
state.Next
we
examined
theusefulness of our factors in explaining
wage
differentials in the United States. For this purpose,
we
used multiple regression analysis.Multiple
Regression
Analysis
Multiple regression is usedto test
whether
we
can
predict the value of our
dependent
variable,in-terstate
wage
differentials, fromknowledge
of the valuesof our independentvariables.This techniqueyieldsinformationregarding the strength, form,
and
reliabilityofthe relationship
between
wage
differen-tials
and
thedevelopment
indicatorswe
derivedthrough factor analysis.
The
multiple coefficient ofdetermination (fl^)
shows
the percentage of varia-tion inwage
differentialsbetween
stateswhich
can be explained by thedevelopment
indicators.The
Betacoefficient(b) isan estimateofthe
amount
and
direction of the
change
inwage
differentials thatwould
be expected for aone
unitchange
in the relevantdevelopment
indicator.^ For instance, aBeta coefficient of 1.25
would
suggest thatwage
differentials increase by $1.25 for every 1 unit
change
in the relevant predictor, while a Betacoefficient of-1.10
would
indicate a declineof $1 .10 for
each
increase ofone
unit in the predictor.NorthCarolina's industryisdominated bylabor-intensiveplants. Photoby Francis Hocutt.N C Dept ofLabor
A
number
ofother coefficientscan beexamined
inorder to
gauge
the reliability of the relationship discovered.The
f-statistictestswhether
aBetavalue as large as thatfound
in the regression analysiscould have occurred by chance.
The
f-values arecompared
to a table of standard valuesand
theresults are expressed as a level ofsignificance.
The
level ofsignificance isinterpreted as the probability
that the Beta value
was
the result ofchance
varia-tion.
The
F-ratio fortheequation isanalogous
tothef-statisticfor
each
Betacoefficient. Itisameasure
of the probabilitythat an R^ as high asthatobtainedinthe regression analysis could have occurred by chance. Forthe
purposes
of thisparticularanalysis, a significance level of .01 will be required to reject the null hypothesis. In other words, unless the probability of obtaining these results bychance
isgreaterthan 1 in 100,
we
assume
thatthe results of the regression are valid.According
to the studies by Malizia ef a/.. NorthCarolina's
wage
gap
was
largely attributable tothe local effect.We
decided to explore the predictivepower
of ourdevelopment
indicators in explaining this portionofthewagegap.Thedependentvariable
ofthe
model
isthelocal effecton
interstateearningsdifferentials.
The
independentor predictor variables are the factors generated in the previous step.Economic
development, asdefined here,isclearlylinked to distribution, while
economic
growth
isE
Figure 2
Preliminary Model GeneratedThrough Multiple RegressionAnalysis
,us
wr
/wr
= 5.09standard errorofb
f-statistic
Adjusted R^ = .77Std
b, ,t>2 ,b, ,b.
-2.71 Fl (1.039) (-2.603) Err. of Est. = 6.69
-9.11 Fll (.974) (-9.35)
F=
31.27 A/= 48significant at betterthan .01 level ofsignificance
significantat betterthan .05 level ofsignificance.
•6.60 Fill -2.05 FIV -2.80 FV
Figure 3 Reestimated Model
E
i,,s us5.09 -2.78 Fl
standard errorof t» (1-14) f-statistic (-2.44)
Adjusted R' = .72 Std. Err. of Est.
-9.30 Fli -6.71 Fill (1.06) (1.55) (-8.74) (-5.80)
7.32 F= 40.48 A/ = 48
fc>, ,£)2 .'t)3 significantat bettertlian .01 levelof significance. related onlyto increased production. Therefore,
we
hypothesizedthatthe
development
indicatorswould
be better predictors of
wage
differentials than thegrowth
indicators established during the factor analysis step. In interpreting the results of the multiple regression analysis,one must
remember
that the
wage
differential is expressed as a gap. Therefore, positive values of thedependent
variables
denote
lowerwage
levelsand
negative valuesdenote
higherwage
levels.In performingthe previousstepof thisanalysis,an orthogonal rotation algorithm
was employed
(Nieefal. 1975).This
means
thatthe factorsgeneratedwere
by definition uncorrelated. Regression analysis
assumes
that the predictor variables are not highlycorrelated with
one
another,and
by using theorthogonal rotation technique
we
assuredcom-pliance with this assumption. Allofthe factors
were
negatively correlated to
wage
differentials. Thisindicates that increasing values of the factors are
associated with higherstate
wage
levels. Thiscon-formed
to our theoretical expectations in all casesexcept
where
higherunemployment was
found
tobe
associated with higher wages.
The
next stepwas
to fit an equation in the form:E
w'/w""'
b„ +
bF\
+b
FN
+ ti.Fill + ti FIV +h
FV
J 4 5
where:
Fl ' Fll Fill
=
Wage
Differential (Local Effect)= Inequality
and
Poverty= Unionization
= Urbanization
and
Government
Expenditures FIV = Productivity
FV
=Unemployment
bi ,...,bs = Parameters to be estimated
We
would
expect the relationships to takeon
the following signs:HI
: t»i<
H2
: bj<
H3
: bg<
H4
: to,<
H5
:b5<
The
null hypothesis is that:Economic
growth
and
economic
development
indicatorswill have
no
significant predictivepower
in explaining
wage
differentials, or:HO
: b,^5
=0
The
model which
was
generatedappears
inFigure2.Seventy-seven percent of the variance in
Wage
Differentials
was
explained by the model.The
direction ofthe relationships are ashypothesized in all but
one
case.Unemployment
is still directly related to higher wages, in opposition to both oura priori expectations
and
Seers' theory. Since the relationshipbetween
productivityand
wage
dif-ferentials failed to attain a .01 level ofsignificance,
we
cannot
assume
that the true population Beta"We
believe that
North Carolina
ismistaken
in itsdecision
to
concen-trate
the majority
of
itsdevelopment
efforts
on changing
the
industrial
mix
present
inthe
state."
coefficient is significantly different from zero.
The
unemployment
and
productivity factorswere
thendropped
from
the equationand
themodel
was
reestimated (see Figure 3).
Conclusions
This
model
impliesthathighwages
areassociatedwith relative
income and
education equality,and
with a
more
effectivelyorganizedtradeunionmove-ment, as
would
be expectedfrom
Seersand
Em-manuel. It also
shows
that states characterized byhigher levels of urbanization
and
government
ex-pendituresforsocial
purposes
aremore
likelytobehigh
wage
states.As
we
had
hypothesized, botheconomic
development
and growth
are related tohigherwages.
However,
theeconomic
development
indicators
seemed
tohave
a closer relationship towages
than did thegrowth
indicators.As
originally hypothesized, theconcepts
ofeconomic
growth
and
economic
development
areboth important inattainingbroadly-based,balanced
regional development.
However,
a distinction canand
must
be
made
in order to understandwhy
regional inequalityexistsintheUnitedStates.States
in
which
development
policies rely solelyon
economic
growth
objectives without givingap-propriate consideration to the distribution impacts
of this
growth
are likely toremain underdeveloped.We
believe that North Carolina is mistaken in itsdecision to concentratethe majorityof its
develop-ment
effortson changing
the industrial mix presentinthe state. Further, these
economic
growth
effortshave
impeded
theachievement
ofbroad-based
these policies rely on the existence of low
wages
inthe state
and on
discouragingworker
organizationthrough right-to-worklegislation,theyhave blocked
the possibilities of significant gains in earnings for theNorth Carolina worker.
The
studiesbyMaliziaet al. have seriously questionedwhether
or not NorthCarolina's growth-oriented policy will ever benefit
North Carolina
and
theUnitedStates asawhole,and
North Carolina's relatively stable ranking as the
forty-fifth of forty-eight states in average earnings,
support Malizia et a/.'sconclusions.
Our
analysishasshown
thatworkerorganizationsand concern
foreconomic and
educational equality are presentin highwage
states. Italso indicatesthatthese
economic
development
indicatorshave
a stronger role in explaining interstate earningsdifferentialsthan
do
indicatorsofeconomic
growth.On
the basis ofthese findings,we
feel thatthestate of North Carolinamust
shiftitsemphasis
topeople-oriented
development
policiesand
shouldremove
institutional barriers to
worker
organization that presentlyexist.Policies
which
incorporateeconomic
develop-ment concerns do
not necessarily preclude thecontinued growth of North Carolina's
economy.
True
development
embodies
elements of bothecomonic growth and
economic
develomment.
The
state
must
seekways
tochange
its presentdevelop-ment
policies so thatthey willno
longer operateatthe
expense
oftheeconomic
development
concepts discussed herein.The
abandonment
ofwage
suppressionand
therepeal of the right-to-work legislation
may
lead tolower rates of growth in thestate's
economy,
foraswages
rise, the state loses part of its relativeadvantage
in recruitingnew
industries.The
statemust
recognize, however, that its presentdevelop-ment
policies are operating at theexpense
of theNorth Carolina worker.
Improvements
in the in-dustrial mix of the state havehad no
appreciablepositive effects
on
closing theearningsgap
(Malizia 1975).The
decision as towhich development
policy topursue
and
which
elements toemphasize
is adifficult
one
atany
level ofgovernment. Evidence has
been
presented to suggest that the current policy oftheNorth Carolina stategovernment
is notimprovingthelivingconditionsofthestate's
popula-tion. Forthis reason
we
urgethestate toreconsideritspolicies
and
to take strong stepsto insurethatthebroadmajorityofthestate'sworkerswillshareinthe benefits forthcoming from the state's
economy.
Notes1. The authors would like to acknowledge the support,
en-couragement, andhelpofanumberofpeoplewithout
whom
thispaper would nothave beenwritten.Ourthanksgofirstto Emil Malizia, whose research and teaching suggested this project, andtoAnnWitte, whoprovided somuchof herselfin
termsofmethodological consultation. In addition,wewould
liketoexpress our appreciation toDianneReidforgiving us thebenefit ofexamining herdissertation proposal.
2. The Gini coefficient is a measure of thedegree to which a distribution differs from equal distribution. In this case the coefficient refers to the distribution of income. It varies
between limits of zero and one. A coefficient of one would denotethatallincomeinaregionwasearnedbyoneperson.A
coefficient ofzerowould mean thatallpersons inthe region
earnedthesameamount.Inpracticalresearchneither ofthese
extremes will occur. For a more complete exposition see Isard,Walter1960.MethodsofRegionalAnalysis.Cambridge MIT Press.
3. Thecoefficientdiscussed hereisthe un-standardized Beta[b] coefficient, also known as the regression coefficient. This interpretationholdstrueaslong as theindependentvariables are not highly intercorrelated and weassume that all other variables are held constant. The useofthecoefficient "b">s
employedhere, asisdoneinSPSS.Some mayrecognizethis
as"g "aslisted in
other sources.
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