Of the following pairs,which pair contains two data-collection techniques that are most likely to involve direct contact between the researcher and the research participant

A)  direct observation and interviews 
B)  questionnaires and interviews 
C)  archival research and questionnaires 
D)  archival research and psychological testing

Children who are exposed to vastly different environments

A) have vastly different personalities.
B) are equally the same in personality.
C) are more isolated and lonely.
D) are likely to be more introverted than extroverted.

A group of researchers conducts a study to determine if a child's performance is affected by the presence of other children.First,the children are taken to a room with no other children and timed while they complete a puzzle.Later,the same children are taken to a room with four other children and timed while they complete a similar puzzle.In this study,what do you call the length of time it takes to complete the puzzle

A)  extraneous variable 
B)  control variable 
C)  dependent variable 
D)  independent variable

Researchers who were studying plant growth raised plants in two separate rooms.One room had taped conversations playing 24 hours a day; the other room was silent.The researchers found that the plants grew better in the room that had the conversations playing.In this study,what would you call the type of room (silent versus conversation)

A)  placebo 
B)  independent variable 
C)  dependent variable 
D)  extraneous variable

Elisa is entering survey data from adult males in a research study.One respondent has listed his height as 6 feet 5 inches,but the occupation is hard to decipher.Elisa thinks it might be basketball player or bank president.She decides to enter basketball player as the occupation,because he is so tall.What did Elisa do in this case

A)  demonstrated the conjunction fallacy in making her decision 
B)  demonstrated overextension in making her decision 
C)  probably relied on the representativeness heuristic to make her decision 
D)  probably relied on the availability heuristic to make her decision

One group of people suffering from a variety of emotional disorders undergoes psychotherapy. A second group, similar to the first, receives no psychotherapy. Compared to the second group, how much improvement will the first group probably experience?

A) The average treated person will improve about the same as the average untreated person.
B) The average treated person will improve more than about 80% of the untreated people.
C) The average treated person will improve more than the most improved of the untreated people.
D) The average treated person will improve less than the average untreated person.

What is the third stage of prenatal development,which lasts from two months through birth

A)  postnatal 
B)  postgerminal 
C)  fetal 
D)  embryonic