According to your text, the IQ scores of immigrants in the early 20th century reflected the length of time they have lived in the United States, rather than their true intelligence. In the language of research methodology, length of time in the United States is a(n) __________ variable in this instance.
A) confounding
B) independent
C) control
D) IQ and socioeconomic status are unrelated.

Question

Quizplus · Accepted Answer

A confounding variable is one that can affect the outcome of a study and is related to both the independent and dependent variables. In this instance, the length of time in the United States is a potential confounding variable because it is related to both IQ scores (dependent variable) and immigrant status (independent variable). Therefore, it needs to be controlled for in order to accurately determine the relationship between immigrant status and IQ scores.

According to Your Text, the IQ Scores of Immigrants in the Early