PSYC2101 Lecture Notes - Lecture 12: Meta-Analysis, Factor Analysis, The Bell Curve
Document Summary
Data suggests working memory tests do not improve intelligence. However, it does suggest that physical exercise can - control, speed and spatial tasks as. Meta analysis of nearly 80 studies published in 2012 found a single bout of exercise had. Strongest effects for intense exercise followed by a short delay before cognitive. Exercise for 11-20min resulted in a negative effect- longer than 20min resulted i. Another study had participants complete exercise for 15min and then complete 2-back. Found quicker reaction time for those who has exercised relative to control. More so for executive function and controlled tasks. Gap in intelligence between african americans and white americans - 20 point gap - wh. Do test score differences reflect true differences in intelligence or rather biased testin. Bias could disproportionately affect one group more than another (jobs, uni etc. Differential validity: test bias exists when conclusions are appropriate for one subgro groups of people who take the test.
