People who live to see their 100th birthday are referred to as

Which area of psychological research focuses on how cognitive or social features of human

behavior may have provided early humans with a competitive advantage over other species? a. Developmental psychology b. Cross-cultural psychology c. Evolutionary psychology d. Social psychology e. Personality psychology

As infants develop

a. babbling shifts from single syllable utterances to combinations of different sounds. b. the average length of each babbled sound decreases. c. babbling tends to become more constant in pitch. d. they shift from babbling to cooing.