Marcus is color-blind because he lacks cone receptors for wavelengths of light in the red spectrum. Marcus's inability to see the color red illustrates a deficit in the process of ______________________.

Evan takes on the roles and values of his parents. Marcia and other psychologists might categorize him as experiencing: _____

a. identity achievement b. identity diffusion c. identity foreclosure d. identity moratorium

Fast mapping denotes the phenomenon that

a. words are associated with objects so rapidly that children are not systematically evaluating all possible meanings of a word. b. children have identified concepts prior to language; words are used as symbols to denote these concepts. c. children are more likely to learn words consisting of sounds they have already mastered. d. children often understand words before they are able to produce them in their own speech.