Lecture 1 - Introduction Flashcards
What is the narrow conception of development?
Development is sequential, unidirectional, has an end state, irreversible, qualitative, independent of culture (biological growth), universal
What is the difference between the narrow conception and the extended conception of development?
According to the extended conception, development is not necessarily based on stages, doesn’t always have an end sate with a higher value, it’s qualitative and quantitative, interindividual different, affected by culture and biology, plastic.
What is the definition of developmental psychology?
Developmental psychology deals with behavioral changes within persons across the entire lifespan, and with differences between and similarities among people in the nature of these changes
What is the aim of developmental psychology?
Its aim is to describe these intraindividual changes and interindividual differences + explain how they come about + find ways to modify them in an optimum way
What does developmental psychology focus on?
Normative development (everyone has in common) + individual differences
What do we do when we study normative development?
When studying normative development, we link important changes to a certain age
Why do changes only correlate with age?
Biological age is never responsible for changes, and thus does not explain changes
What is the difference between variability and change?
Variability = short-term changes that can be reversible
Change = enduring
Variability can predict change
What is a cross-sectional design?
Investigate individuals of different ages at one point in time. Measure differences
What is a longitudinal design?
Same individual across different points in time. Measure change
What is a cohort?
Any group that shares having experienced the same cultural environment and historical events (e.g., same year of birth)
What is a cohort effect?
Differences in developmentally relevant variables that arise from (non-age-related) factors to which each birth cohort is exposed > observed results caused by cohort characteristics
Why are cohort effects a problem for cross-sectional studies?
Age effects confound with cohort effects, no info on individual trajectories, limited generalizability to other times of measurement
What are the advantages and disadvantages of cross-sectional designs?
Advantages: economic in time, cheap, shows similarities/differences between age groups
Disadvantages: age effects confound with cohort effects, no info on individual trajectories, limited generalizability to other times of measurement
What are the advantages and disadvantages of longitudinal designs?
Advantages: true assessment of intraindividual change, assessment of stability and change of developmental characteristics
Disadvantages: age effects confounded with time-of-measurement effects / retest effects / attrition effects, limited generalizability to other cohorts, long duration, high cost