In this video I describe variation in IQ scores and the distribution of IQ scores in the general population. IQ scores follow a normal distribution with a mean of 100 and a standard deviation of about 15 points. Knowing IQ … Read More
History of Intelligence Testing
In this video I briefly describe the history of intelligence testing including the work of Sir Francis Galton, Alfred Binet, Theodore Simon, William Stern, Lewis Terman, and David Wechsler. I also discuss the concepts of mental age, ratio IQ, deviation … Read More
What is Intelligence?
In this video I introduce the concept of intelligence and the difficulties of defining and measuring intelligence. I mention the tendency toward reification when thinking about IQ scores and the importance of remembering that intelligence is a hypothetical construct, not … Read More