Group Assignment #$3$:

Measurement and Validation

Specific Assignment Details

Marilyn Gonzalez and Daryl Perrone have asked you to complete the following steps to evaluate the soundness of the proposed selection plan. They are especially interested in learning what your results suggest about the validity of various selection methods.

$1.$ Examine the data provided in Tables $3\mathrm{.}1$ and $3\mathrm{.}2.$ Write a one$-$page memo describing what the results show. Be certain to emphasize both the practical and statistical and statistical significance of the results. Examine the differences between the two samples. What differences do you notice? Provide an explanation for why these two designs might yield different results.

$2.$ One key question for selection methods is the content validity of selection methods. For each of the scales proposed by Crestwell, assess how well it matches the content that it claims to measure, and how well it corresponds to the specific job of store associate. Make suggestions for how each method could better capture the content it seeks to measure.

$($Tip: You must create tables$/$grids such as the tables below, but with the other predictors in the rows below Education i$.$e$.,$

the next two tables examples represent the top two rows of the tables your group should create.$)$

$3.$ After summarizing the overall results of the staffing system, write a description of what Crestwell should do if it wants to find good candidates. The company would also prefer to use only two or three predictors. Based on the analyses above and the data provided in the case, describe which predictors you would recommend for this job, and explain why these predictors are the best choices.

$4.$ Based on the description of the experimental validation procedure $($PREDICTIVE DESIGN$),$ do you believe that the observed validity estimates will generalize to other stores? Provide an explanation for why the traditional method $($CONCURRENT DESIGN$)$ for collecting validation evidence and the experimental procedure might yield different results. Which method do you believe is more accurate? Why or why not? What additional information might you use to determine if the results will generalize?