A Researcher Observes a Correlation of Values from 2 to 10

question 67

Multiple Choice

A researcher observes a correlation of values from 2 to 10 points and draws conclusions about the full range of values in the population from 0 to 21 points.Which limitation for correctly interpreting a correlation coefficient did the researcher violate?

• A) reverse causality
• B) restriction of range
• C) a confound variable
• D) homoscedasticity

Understand the concept of correlation in psychology research and the difference between positive and negative correlations.

Appreciate the psychological perspective that sees humans as inherently good and capable of personal growth (humanism).

Recognize the use of reinforcement in understanding behavior and the applications of psychology in explaining, predicting, describing, and controlling behavior.

Understand the shift from introspection to more empirical and observable measures in psychology research.

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Definitions:

Endoderm

The primary germ layer that gives rise to epithelial tissues only.

Morula

A zygote that has undergone cleavage and results in a ball of cells.

Blastocyst

A morula that travels down the uterine tube to the uterus and is invaded with fluid. It then implants into the wall of the uterus.

Cleavage

The process by which a single cell divides into two or more daughter cells, often referred to in cellular biology and embryology.