_____ is the inability to remember anything prior to age 2

According to the discussion in Chapter 8, John Anderson's ACT-R Theory

a. focuses on discovering how experts and novices categorize new objects. b. explains how working memory processes semantic information; however, ACT-R theory is not currently concerned with the way this information is stored in long-term memory. c. proposes that each concept in semantic memory can be described in terms of a list of characteristics that its members must possess. d. attempts to explain processes such as language, reasoning and decision makingâ€"in addition to semantic memory.

Based on their research, some scientists believe that ________

a. adolescents who commit violent crimes should be tried as adults because their cognitive abilities and moral reasoning abilities are like those of an adult. b. full neurological and cognitive maturity often does not occur until about age 25, and many teenagers who commit crimes should be considered "less guilty by reason of adolescence." c. the human brain is fully developed around 10 years of age, so the risky, dumb, or criminal things adolescents do should be blamed entirely on hormonal changes. d. adolescents should be considered as adults in the eyes of the law as soon as they have completed puberty, because physically they are adults at that point.