IQ Across the Lifespan: How Your Intelligence Changes from Childhood to Old Age
I tested the same woman twice, twenty-three years apart. The first time, she was a twenty-two-year-old college senior referred for a learning disability evaluation. Her processing speed was exceptional, in the 95th percentile. Her working memory was strong. Her vocabulary, solid but unremarkable, fell at the 60th percentile. Her Full Scale IQ came in at […]