Which of the following would be difficult to assess using empirical research?
A. the abilities of non-human primates to use sign language
B. the reaction time for participants to indicate they heard a ball drop on a table
C. whether a baby is crying because he is sad, hungry, or in pain
D. whether the id, ego, or superego is most responsible for emotional reactions
Which of the following is not a potential problem associated with relying on college students as participants in psychological research? They have higher attrition rates than other populations.