cognitive development {Ans: pattern of change in mental abilities, such as learning, attention, memory, language, thinking, reasoning, and creativity}maturation {Ans: unfolding of a universal natural sequence of physical and behavioral changes}historical generation {Ans: a group of ppl strongly influenced by a major historical event during their formative period}sensitive periods {Ans: times in development when a given event or its absence usually has a strong effect on development}environment {Ans: totality of nonhereditary, or experimental, influences on development}socioeconomic status (SES) {Ans: combination of economic and social factors, including income, education, and occupation, that describe an individual or family}