The Average American Infant First Crawls at Age

question 164

Multiple Choice

The average American infant first crawls at age

• A)six months.
• B)10 months.
• C)12 months.
• D)14 months.

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Definitions:

Circadian Rhythms

Natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.

Seasonal Affective Disorder

A type of depression that's related to changes in seasons, beginning and ending at about the same times every year, typically worsening in the fall and winter months.

Sociocultural Theories

Psychological theories that emphasize the importance of societal and cultural factors in the development of mental processes and behavior.

Cohort Effects

Phenomena observed in research where the characteristics of a particular group of individuals, defined by a shared temporal experience or common life event, influence the outcome of a study.