Chapter 9 Flashcards
(153 cards)
Development
- is a series of changes (for the better or for the worse)
Change involves tradeoffs in development True or False?
true
What is the difference growing old? And growing up
Growing old is biological
Growing up is developing something like maturity,emotional intelligence, capability to control emotion, responsibility more rational thinking
Domains of development
- intelligence
- memory
- mental (Piaget theory of cognitive development)
- psychosocial (Erickson psychosocial stages)
Chronological age
- the number of months or years since an individual’s birth
Developmental age and an example
- the chronological age at which most children show a particular level of physical or mental development
- example walking without assistance
Normative investigations
- research efforts designed to describe what is characteristic of a specific age or developmental stage
What are the two types of research design
- 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 type of study is tracking the same individual over time
- longitudinal design
What type of research design is comparing babies of different ages
Cross sectional design
What are the advantages of longitudinal design
- researchers can identify individual differences like the developmental age for walking is not the same across individuals
- researchers can examine relationships between early and later events and behaviours
- can test direction of causation
What are the disadvantages of longitudinal design and what are the ways that data can be contaminated
- time consuming and costly
- data are easily lost (high drop out rate), and have to drop the data set entirely
- data might be contaminated by
1. Biased sampling
2. Practice effects
3. Cohort effects
Cohort
A group of people who develop in the same time period and are influenced by particular cultural and historical conditions.
Differences in characteristics, behaviours or outcomes among people of different age groups or geographic location which are effects of cultural historical change on the accuracy of findings where the results based on one cohort may not apply to another cohort refers to what effect
Cohort effect
Advantages of cross sectional design
- takes less time to complete
- less costly
- not subject to practice effects ( results are not due to repeating a task various times)
Disadvantages associated with cross sectional design
- cannot tell is an early event has an impact on a later event ( the intelligence between age groups is it really because of age or was the adult significantly smarter as a child then then child they are comparing them to)
- cohort effects (especially comparing two cohorts) example comparing teenagers with seniors and tech skills its hard to tell differences if they are due to aging or just difference life experiences aka teenagers growing up with cellphones)
Seen in the example of comparing the iq of father and sons what is an observation made caused by the cohort effect
- accessibility and quality of education account for the difference in iq between the two generations
Fluid Intelligence (Problem-Solving Ability):
• Peaks in early adulthood.
• Declines starting in middle adulthood.
• Involves reasoning, processing speed, and working memory.
Crystallized Intelligence (Accumulated Knowledge):
• Continues to increase through middle adulthood.
• Stays stable or slightly declines in late adulthood.
• Includes vocabulary, facts, and general knowledge.
Age-Related Intellectual Changes:
- Performance Declines:
• Speed of Processing, Working Memory, and Long-Term Memory decrease with age.- Preserved Abilities:
• World Knowledge (e.g., vocabulary) remains stable or improves with age.
- Preserved Abilities:
Cross-Sectional vs. Longitudinal: Understanding Age-Related Changes in Intelligence
- Cross-Sectional Design:
• Suggests intellectual decline starts early in life.
• Affected by cohort effects (differences in experiences across generations).- Longitudinal Design:
• Shows stability or improvement in intellectual abilities until middle adulthood.
• Better for tracking individual changes over time.
- Longitudinal Design:
True or false fluid intelligence shows greater decline with age than crystallized intelligence
True
What has a decrease in fluidity been attributed to
General slowing down of processing speed
Due to aging older adult’s performance on —— is greatly impaired
- intellectual tasks that require many mental processes to occur in small amounts of time