Which of the following characterizes the relationship between brain serotonin and aggression?

According to the research on people's judgments about men and women,

a. people rarely judge men and women differently in the current era. b. people now assume that women political candidates are actually more competent than male candidates in areas such as national security and the economy. c. people are most likely to use stereotypes if they are busy working on another task at the same time. d. people usually favor a male candidate, even when it is clear that a woman is well-qualified for a job.

An infant hears the sound "ga" over and over and eventually stops listening. The sound then changes to "ta," and she still doesn't pay attention. You can infer the infant:

a. is able to perceive the difference between the two sounds b. cannot perceive the difference between the two sounds c. prefers sounds that start with "g" over sounds that start with "t" d. prefers sounds that start with "t" over sounds that start with "g"