Final answer:
It is true that an expectancy chart can be used to graphically illustrate the relationship between test scores and job performance. Such a chart shows the correlation, which can be positive or negative, but it's essential to verify that this correlation is predictive of actual job performance.
Step-by-step explanation:
The statement that an expectancy chart can be developed to illustrate the relationship between test scores and job performance graphically is true. An expectancy chart is a visual representation that depicts the correlation between two variables, in this case, test scores and job performance. This type of chart can show, for instance, whether higher test scores tend to correspond with better job performance. Such a correlation may be positive, indicating that as one variable increases, so does the other, or negative, meaning that as one variable increases, the other decreases.
However, while correlation provides predictive value, it is important to remember that correlation does not imply causation. A significant correlation coefficient suggests a linear relationship and the potential for prediction, as evidenced in the relationship between exam scores or the selection of candidates based on standardized tests that correlate with college GPA. In the context of employment, a verified assessment accompanying any personality or skill test ensures the correlation is meaningful for predicting job performance.