What is development?
• Different from just simple growth and change:
• 1. It makes an individual better adapted to the environment.
• 2. It proceeds from the relatively simple and global to the more complex and specific.
• 3. It is relatively enduring over time and situation.
• Enduring growth that makes an individual better adapted to the environment by enhancing its ability to engage, understand, and experience, more complex behavior, thinking, and emotions.
Goals of developmental research
•
Essentially all individuals who study human research have four related
goals:
• 1. Describe developmental change
• 2. Explain what causes developmental change
• 3. Predict what and individual will be like based on past and present
characteristics.
What is being studied?
•
Eight age periods characterize major transitions in human
development:
• 1. Prenatal Period (conception to birth) • 2. Infancy (birth to age 2)
• 3. Early Childhood (2-6) • 4. Middle Childhood (6-11) • 5. Adolescence (11-20)
What is being studied?
•
Age boundaries are approximate, and vary by culture.
•
Within these categories there are generally three major domains of
study:
• Physical Development – Changes in size, outward appearance, and inner
physical functioning.
• Cognitive Development- Changes in intellectual abilities such as memory,
language, problem solving.
What questions are asked?
•
Four basic questions about human development:
• 1. Which aspects of development are universal, and which vary between
individuals and groups?
• 2. Which aspects of development are continuous and which are not?
Guiding principles in studying
development
• Development results from the constant interplay of biology and environment.
• Development occurs in a multilayered context.
• Individuals are affected by various sources of stimuli (interpersonal relationships, social institutions,
etc…)
• Development is a dynamic reciprocal process.
• Development is cumulative.
• Developmental Trajectory – The pathway that connects the past with present and future.
Theories of Development
•
Theory – set of ideas or principles based on empirical evidence that
explains related phenomena.
•
Numerous different types of theories regarding development.
• Can generally be split into two categories:
• Classical Theories
Classical Theories
•
Psychoanalytic Theory
• Sigmund Freud
• Focuses on inner-self and how emotions determine our
interpretations/behaviors.
• Believed infants are born with sexual and aggressive urges and seek
gratification.
• Urges often collide with reality (hopefully leads to self-control).
• How the child resolves the conflict between its urges and reality, it
Classical Theories
•
Psychoanalysis
• Divided development into stages:
• Oral
• Anal
• Phallic
• Latency
• Genital
Classical Theories
•
Erikson’s Psychosocial Development
• Progression of predictable emotional and social stages from infancy through
adulthood.
• Believed that personality is not fixed, and changes throughout life (different
from Freud).
• Also believe that the progression of these stages results from social
interaction (rather than inner conflict).
Classical Theories
•
Learning Theory
• Emphasizes role of external influences on behavior
• View behavior, and development as a result, as the result of consequences of
experience.
•
Behaviorism
• Based in learning theory.
• Classical Conditioning • Operant Conditioning
Classical Theories
•
Social Learning Theory
• Albert Bandura
• Learning/Development can be acquired by imitation of a model performing a
behavior.
• Observational Learning
Classical Theories
•
Cognitive-Developmental Perspective
• The way that individuals think about their physical and social world affects
our development.
• When we change the way the think about and view the world, we also change
in terms of our development.
• Assimilation – Fitting new information into existing ways of thinking.
Contemporary Theories
•
Ecological/Sociocultural Perspectives
• Studies the child’s immediate environment, relationships, and settings to
emphasize the role of context in development.
• People aren’t raised in isolation and similar environments or relationships
Contemporary Theories
• Behavioral Genetics
• Focuses on understanding inherited behavior and the reciprocal relationship between genetics
and experience/behavior.
• Evolutionary Perspective
• Interested in identifying the point in our evolution at which a certain behavior/cognition was adaptive.
• Dynamic Systems Theory
• Focuses on the complexity of development
• Changing any part of our ever-changing “system” can have consequences throughout the system.
The Scientific Method
•
1. Develop a hypothesis.
•
2. Develop a study to test the hypothesis
•
3. Analyze the data.
•
4. Develop a conclusion based on analysis.
Research Methods
•
Observational Research
• Naturalistic Observation
• Participant Observation (Observing an interview)
• Structured Observation (Setting tasks to evoke a behavior)
•
Self-Reports
• Questionnaires/Interviews
Research Methods
•
Standardized Tests
• Tests administered to all participants in precisely the same manner. • Norms
Research Design
•
Case Study
• Intensive study of one or a small number of individuals/entities. • Generally interview format.
•
Correlational Study
• Examines the relationship between two or more variables. • Range from -1.00 – 1.00
• Positive Correlation • Negative Correlation
Research Design
•
Experiments
• Provide a way to determine cause-and-effect relationships. • Independent Variable
• Dependent Variable • Experimental Group • Control Group
• Uses Random Assignment
Studying change over time
•
Longitudinal Studies
• Studying the same individual or group of individuals over a significant period of time.
• Allows for studying direct developmental changes in the same individuals.
• Takes a great deal of time and resources
•
Cross-Sectional Studies
• Studying individuals of different ages at the same time.
• Allows for studying developmental differences between age groups.
Research Ethics
• Six primary ethical rules:
• 1. Nonharmful Procedures • 2. Informed Consent
• 3. Confidentiality
• 4. Debriefing
• 5. Discussion of the implications of the findings.
• 6. Meet requirements or face consequences for misconduct.
• Do these standards protect the participant to an appropriate level?