Research findings obtained over the past 20 years suggest that Alzheimer disease (AD) may
have its origins in early life. In this review, we consider the evidence for early-life risk factors …

This longitudinal study of executive function (EF) addressed three questions. These
concerned:(i) the validity of EF as a latent construct underpinning performance at ages 4 and …

The gains of scores on standardized intelligence tests (ie, Flynn effect) have been the
subject of extensive debate concerning their nature, causes, and implications. The aim of the …

Lynn argues that the condemnation of eugenics in the second half of the 20th century went
too far and offers a reassessment. The eugenic objectives of eliminating genetic diseases …

The disuse hypothesis of cognitive aging attributes decrements in fluid intelligence in older
adults to reduced cognitively stimulating activity. This study experimentally tested the …

Generational intelligence gains are one intriguing finding in science. Nutrition and cognitive
stimulation are among the most remarkable causes of the upward trend in intelligence. The …

Enhancing cognitive ability is an attractive concept, particularly for middle-aged adults
interested in maintaining cognitive functioning and preventing age-related declines …

Fluid intelligence, the ability to solve novel, complex problems, declines steeply during
healthy human aging. Using fMRI, fluid intelligence has been repeatedly associated with …

The scientific construct of general intelligence (g) rests on the correlations among test
scores, while IQ rests on the summation of standardized scores. Although IQ is usually …

Recent attention has focused on the benefits of cognitive training in healthy adults. Many
commercial cognitive training programs are available given the attraction of not only …