Week 8 Lecture 2: Development of IQ PDF

How does IQ change (or not) across development? Chapter 8 Week 8, Lecture 2, February 28, 2024 1 Last Class: Theories of Intelligence How is g factor different from Horn & Ca4ell’s extension of primary mental abili;es? How does Sternberg’s Triarchic Theory of intelligence differ from Gardner’s Mul;ple...

How does IQ change (or not) across development? Chapter 8 Week 8, Lecture 2, February 28, 2024 1 Last Class: Theories of Intelligence How is g factor different from Horn & Ca4ell’s extension of primary mental abili;es? How does Sternberg’s Triarchic Theory of intelligence differ from Gardner’s Mul;ple intelligence theory? What does an IQ score assessed using tradi;onal IQ tests mean? 2 Sternberg Triarchic Abilities Test 3 Intelligence in infancy Bayley Scales of Infant Development III (BSID-III) Measures: Motor Scale Cogni/ve Scale Language Scale Social-Emo/onal Scale Adap/ve Behavior Scale 4 5 Intelligence in infancy Performance varies considerably depending on infants’ states of arousal and mo>va>on. Does not predict performance on intelligence tests in childhood Primarily a screening tool 6 Intelligence in childhood IQ shows stability starting at age 4. Intelligence scores are stable from childhood through adolescence. But there are also large individual differences. 7 Development of Intelligence Mixed findings looking at intelligence change in adulthood (based on research design) Sea*le Longitudinal Study Fluid intelligence appears to decline earlier than crystallized intelligence 8 Different developmental trajectories for fluid and crystalized intelligence 9 Development of Intelligence Seattle Longitudinal Study Findings Biological slowing of central nervous system Declines in frontal lobe functioning and reductions in neural interconnectivity Large cohort effects in intelligence Flynn effect 10 What role do cultural influences play in shaping IQ test performance and how might these influence the validity and fairness of IQ assessments across diverse populations? Provide examples. 11 Influences of culture and context on IQ Ethnic differences in IQ Socioeconomic Status difference found in IQ IQ scores are closely linked with educa>on. Stereotype threat 12 Group Differences in IQ IQ tests tap the thinking style and language of the majority culture, placing minority groups at a disadvantage. Reduce culture bias in IQ tests by: Including culturally fair questions (familiar to people from all backgrounds) Reducing reliance on verbal tasks 13 Next week… Learning differences 14