In his new version of intelligence testing, David Wechsler included new items that required nonverbal reasoning and discarded the intelligence quotient in favor of a new scoring system based on the normal distribution.

This statement is TRUE.

Explanation: David Wechsler born January 12, 1896 was a psychologist. He developed well-known intelligence scales. His test are based on the philosophy that intelligence is "the global capacity to act purposefully, to think rationally, and to deal effectively with one's environment".  In his test, David Wechsler included new items that required nonverbal reasoning evaluated with different subtests.

answer; taking detailed notes during the interview;

answer; depression and breathing related sleep disorder(independent);