Baby Natalie is generally in a positive mood. She follows a regular daily routine and is calm during new situations. According to Chess and Thomas, Natalie is

A. During this time, a human's immune system reaches its full potential: Immune maturation occurs over childhood, but evolutionary accounts emphasize learning and brain development rather than immune maturation as the main reason for extended childhood.
B. During this time, humans develop a large brain and gain the experience required to master the complexities of human society: Developmental evolutionary psychologists favor this explanation: humans have large, slow-maturing brains and need an extended period to learn complex social, technological, and cultural skills.
C. A long childhood period is a "left over" adaptation from the time when the human life span was considerably shorter than it is today: This “spandrel” or vestigial explanation is not the favored evolutionary account; extended childhood is usually seen as adaptive for learning and brain growth.
D. Rebellion against authority is a necessary step in the evolutionary development of independent behavior: Rebellion may occur in adolescence but evolutionary psychology does not frame extended childhood primarily as producing rebellion; it emphasizes learning and skill acquisition.

A. neglectful: Neglectful (uninvolved) parenting is characterized by few demands or restrictions and low involvement; it doesn’t fit a parent who is highly involved.
B. authoritarian: Authoritarian parents are highly controlling with many demands and strict rules but are low on warmth/responsiveness, so they are not described as highly involved in a permissive way.
C. indulgent: Indulgent (permissive) parents are highly involved/warm but place few demands or restrictions on the child.
D. authoritative: Authoritative parents combine high involvement/warmth and clear, reasonable demands/limits; that contradicts the “few demands” part.