Exam 7: Individual and Group Differences in Mental Abilities

Although they were originated for this purpose, intelligence tests are now seldom used in the diagnosis of mental retardation.

In longitudinal studies, mean intelligence test scores increase by small amounts during early adulthood and reach a plateau between the ages of 30 and 40.

Children who are diagnosed as having learning disabilities show deficiencies in rreading and/or other linguistic functions.

Julian Stanley found that mathematically-precocious children are generally well adjusted and highly motivated.

Intelligence, social class, occupation, and education are all positively related, but the direction of causation among these variables is not clear.

A fairly consistent finding of research on cognitive abilities is that there is a terminal drop in intelligence after age 60 or 70.

Research studies have shown that, compared with later -born children, first-born children are more

Prenatal and postnatal nutrition has a significant effect on intellectual developme.

Social and emotional problems are rare in children with learning disabilities.

Mentally dull persons tend to come from larger families than mentally bright persons.

The heritability coefficient for intelligence is an index of the percentage of variance in an individual?s IQ that is due to heredity.

A child is diagnosed as "learning disabled" if his or her ability level, as measured by a general intelligence test, is __________ his or her level of achievement.

Whether a rise or a fall in a person?s measured intelligence occurs in later adulthood depends mainly on the

Studies which find that the correlation between the IQs of identical twins is between .77 and )88 demonstrate that intelligence is the product of

Which of the following is most characteristic of learning disabled children?

Lead-related mental defect in childhood persists into adulthood.

Altus and other investigators have reported substantial evidence that, on the average,__________ children are brighter than other children.

According to the classification system of the American Association of Mental Deficiency, a child whose IQ falls in the 50-70 range is __________ retarded.

On the average, Black Americans score significantly lower than White Americans on intelligence tests.

The fact that the correlation between the IQs of identical twins reared together is higher than that of identical twins reared apart is interpreted as demonstrating the importance of heredity in determining intelligence.