TRDemo: A 'shiny' Taylor-Russell demonstration program

In TaylorRussell: A Taylor-Russell Function for Multiple Predictors

A 'shiny' Taylor-Russell demonstration program

Description

TRDemo() is an R 'shiny' function for illustrating the bivariate (i.e., single predictor) Taylor-Russell model for personnel selection. The function can be called from the command prompt (>) by typing:

TRDemo()

After calling the function, users are asked to enter values for 3 of the following 4 variables:

• The Base Rate (BR) of successful criterion performance (i.e., within the target population, the proportion of individuals who successfully execute the job demands).

• The Selection Ratio (SR; i.e., the proportion of hired candidates within the target population).

• The Criterion Validity (CV; the correlation between the selection test and an operationalized measure of job performance).

• The Positive Predicted Value (PPV; The probability that a hired individual can successfully execute the job demands).

Usage

TRDemo()

Details

TRDemo() is a 'shiny' program for demonstrating the classic Taylor-Russell model for personnel selection.

TRDemo() calculates the model-implied value for the omitted variable and prints all model parameters (e.g., BR, SR, CV, and PPV) to screen. Given these parameters, the function also reports the test Sensitivity (defined as the probability that a qualified individual will be hired) and test Specificity (defined as the probability that an unqualified individual will not be hired). Finally, the function plots a correlation ellipse (associated with the CV) showing the relative proportions of True Positives (TP; hired individuals who are qualified for the job), False Positives (FP; hired individuals who are not qualified for the job), True Negatives (TN; non hired individuals who are not qualified for the job), and False Negatives (FN; non hired individuals who are qualified for the job).

Value

No return value.

Author(s)

• Niels G. Waller ([e-mail])

• Ziyu Ren

References

• Taylor, H. C. & Russell, J. (1939). The relationship of validity coefficients to the practical effectiveness of tests in selection: Discussion and tables. Journal of Applied Psychology, 23, 565–578.

Examples

# Type TRDemo() from the command prompt (>) to run the 'shiny' app
# in interactive mode.
 
 

TaylorRussell documentation built on May 29, 2024, 4:01 a.m.