chapter 14: intelligence Flashcards
define intelligence
ability to generalize memories (memory), flexibly use knowledge (cognition) to solve new problems (problem solving)
differentiate between reliability and validity
reliability: consistency across instances of testing
validity: test is measuring what it is intended to measure
define psychometrics
study of psychological assessment
- standardization: test scores are compared to pre-tested ‘standardization’ or ‘norm’ groups
- normal distribution/curve
describe the simon-binet test
30 questions of increasing difficulty with some questionable items
- determine mental age
what is the difference between simon-binet test and stanford-binet test
- if MA > CA, ability above average (gifted)
- if MA < CA, ability below average (delayed)
which intelligence tests have both verbal and non-verbal scales
wechsler
true or false? the environment is a better predictor of an IQ correlation among twins than genetics
false
name factors that could affect performance on an IQ test
- socioeconomics
- gender differences in self-estimated intelligence
- culture: familiarity with task and stimuli can affect performance
what is the Flynn effect
increase in population IQ at about 3 points per decade
name 2 factors that could explain the flynn effect
- complexity: more focus on abstract thinking and critical thinking
- health: greater focus on health = ↑ brain function
what is Spearman’s two factor theory
- general intelligence: varies across people but stable within a person
- specific abilities: affected by education and environment. can vary across person
what is the difference between fluid intelligence and crystalized intelligence?
- fluid: capacity to acquire new knowledge and engage in flexible thinking (genetic)
- crystalized: knowledge and learning that has been acquired throughout the lifetime. affected by personality, education and culture (motivated learning)
why does fluid intelligence decrease as we get older
prefontal cortex atrophies with time
what is the savant syndrome
a person who is otherwise limited in mental ability has an exceptional specific ability
what are acquired savant
people who acquire specific skills from brain injury
- to compensate for damage, other areas of brain will be ‘rewired’, which induces savant-like capabilities