Question

more letters
n. a ________ ________ is an intensive investigation of an individual or group.
o in ________ ________ the psychologist studies and restudies the same group of subjects at regular intervals over a period of years.
p. laurence kohlberg’s study of the development of moral reasoning among american, mexican, and taiwanese boys is an example of a(n) ________ - ________ study.
q. when psychologists find what they want to find, unwittingly overlooking contrary evidence, this is called a ________ - ______ ________.
r. one way to avoid the self - fulfilling prophecy is to use the ________ - ________ technique.
s. the __________ is the figure that appears most frequently in a distribution of scores.
t. ________ ________ is a number that indicates the extent to which, on the average, figures in a given set of data vary from the mean.
u ________ ________ are used to summarize the scores obtained in a study so that they are easier to read and interpret.
v. ________ ________ involve mathematical inferences based on descriptive statistics.
w __________ is the procedure researchers use to try and establish causation.
x. __________ is the branch of mathematics concerned with summarizing and making meaningful inferences from collections of data.
y. in an experimental situation, a __________ is any fact that is capable of change.

Explanation:

N

The term for an intensive investigation of an individual or group in psychology (and research methods) is "case study". So the two - word phrase is "case study".

When a psychologist studies the same group of subjects at regular intervals over years, it's a "longitudinal study". The two - word phrase here is "longitudinal study".

Kohlberg's study of moral reasoning across different cultures (American, Mexican, Taiwanese boys) is a "cross - cultural" study as it compares different cultural groups.

Answer:

case study

O