True or False: IQ is known to decline as individuals age.

The statement that IQ is known to decline as individuals age is not universally accepted as true. Research indicates that while certain cognitive abilities may decline with age, particularly fluid intelligence—which involves problem-solving and the ability to think quickly—other aspects of intelligence, such as crystallized intelligence, which encompasses knowledge and skills accumulated over a lifetime, often remain stable or can even improve.

It is important to recognize that intelligence is multi-faceted, and the way in which IQ is measured may not capture these nuances adequately. Different studies have yielded varying results, suggesting that the relationship between age and IQ is complex and can differ significantly among individuals. Factors such as health, education, social engagement, and life experiences can all influence cognitive performance as one ages.

As such, it is more accurate to state that IQ can vary by individual throughout the aging process rather than adhering to a blanket statement of decline for all individuals. Hence, the conclusion that IQ remains stable captures the ongoing debates and findings in developmental psychology.