Midterm #1 Flashcards
Chronological age
Number of months or years since an individuals birth
Developmental age
- The chronological age at which most show a particular level of physical or mental development
- ex/ developmental age for walking without assistance is 12 months
Normative investigations
Research efforts designed to describe what is characteristic of a specific age or developmental stage.
Longitudinal design
The same participants are observed repeatedly, sometimes
over many years.
Cross-sectional design
Groups of participants of different chronological ages are observed and compared at a given time.
What are advantages of longitudinal design
- Identification of individual differences
- can test a partitial hypothesis with cause & outcome
- direction of causation
What are didadvantages of longitudinal design
-Time consuming and costly
- data is completely lost by drop outs
- data contamination occurs via: biased sampling, practice effects, cohort effects
What is the cohort effect
- Cohort: group of people whowere born around the same time and grew up in similar cultural conditions
- idea that the same cohort ages as a group and therefor the condition follows that group rather than being correlated to a year
What are the advantages to a cross-sectional design
- takes less time to complete
-Less costly - not subject to practice effects
What are the disadvantages to cross-sectional design
- Cannot tell if early event has an impact on later event
- cohort effects
What are the two types of intelligence
Fluid and crystallized
When does fluid intelligence start to decline
Early adulthood
What is fluid intelligence
What is crystallized intelligence
How does aging affect memory
- Aging causes memory deficits even in highly educated individuals
- memory of general knowledge (semantic memory) that was acquired long ago is unaffected
- memory of personal events (episodic memory) that occurred long ago is unaffected