fr md3 lecture 8

What is utility in personnel selection?

The extent to which selection improves the quality of selected individuals compared with not using the procedure.

Why is utility important to organizations?

It helps managers justify the costs and benefits of selection strategies.

How can selection utility be expressed?

As an increase in success rates, average performance, or monetary value.

What is the success rate in selection?

The proportion of selected candidates who are suitable for the job.

What is random selection?

Selecting candidates without using a predictor to distinguish between them.

What are correctly accepted candidates?

Candidates selected who meet the criterion for successful performance.

What are incorrectly accepted candidates?

Candidates selected who do not meet the criterion for successful performance.

What are correctly rejected candidates?

Candidates rejected who do not meet the criterion for successful performance.

What are incorrectly rejected candidates?

Candidates rejected who would have met the criterion for successful performance.

What is the Taylor–Russell model?

A model estimating the success rate among selected candidates using validity, selection ratio, and base rate.

What is the validity coefficient (rxy)?

The correlation between a selection predictor and the performance criterion.

What is the selection ratio (SR)?

The proportion of all applicants who are selected.

How is the selection ratio calculated?

Number selected divided by total number of applicants.

What is the base rate (BR)?

The proportion of the applicant pool considered suitable before using the selection procedure.

What three factors determine Taylor–Russell utility?

Validity coefficient, selection ratio, and base rate.

How does higher validity affect Taylor–Russell utility?

Higher validity generally improves the success rate among selected candidates.

How does a lower selection ratio affect Taylor–Russell utility?

Selecting fewer applicants generally allows greater selectivity and can improve the success rate.

How does the base rate affect Taylor–Russell utility?

It indicates how many applicants would succeed without the test. The model uses it to estimate how much the test improves the success rate among selected candidates.

What is the main assumption of fixed-treatment selection?

Selected individuals remain in the assigned treatment or programme even if later found more suitable elsewhere.

How does the Taylor–Russell model define performance?

It dichotomizes performance into suitable versus unsuitable, ignoring differences above the cutoff.

Why can Taylor–Russell underestimate utility?

Higher cutoffs may increase the average performance of selected candidates, which the model does not capture.

What is the Naylor–Shine model?

A model estimating the increase in average criterion scores among selected candidates.

How does Naylor–Shine differ from Taylor–Russell?

Naylor–Shine considers average performance; Taylor–Russell estimates the success rate.

What assumptions does the Naylor–Shine model make?

A linear, bivariate normal, homoscedastic predictor–criterion relationship and concurrent validity.

What does the Naylor–Shine model assume about validity and utility?

Their relationship is linear, unlike in the Taylor–Russell model.

What is the ordinate (lambda) in Naylor–Shine?

The height of the normal distribution at the predictor cutoff.

How is Naylor–Shine utility calculated?

Utility in standard units = validity coefficient × lambda divided by selection ratio.

In Naylor–Shine, what does Zxi represent?

The predictor cutoff score above which applicants are selected.

What does Naylor–Shine utility of 0.24 mean?

Selected applicants average 0.24 standard deviations higher on the criterion than the overall group.

What are two advantages of Naylor–Shine?

It requires less information than Taylor–Russell, and average job performance is meaningful.

What are two disadvantages of Naylor–Shine?

It does not express costs and benefits in money and can be difficult for stakeholders to understand.

What is the Brogden–Cronbach–Gleser (BCG) model?

A model expressing selection utility as the monetary value of improved job performance minus selection costs.

What factors determine utility in the BCG model?

Validity, selection ratio, performance standard deviation in money, tenure, and selection costs.

What does SDy represent in the BCG model?

The standard deviation of job performance expressed in monetary units.

How can SDy be estimated according to the lecture?

As approximately 40%–70% of the average salary in a sector.

What does average tenure represent in the BCG model?

The average number of years selected employees remain in the job.

What does C represent in the BCG model formula?

The cost of the selection procedure per candidate.

What is the BCG utility formula?

U = N × T × r × SDy × lambda − N × C.

In the BCG formula, what do N and T represent?

N is the number of candidates; T is average tenure in years.

What was the result of the lecture's BCG example?

Utility was $448,680 for 100 candidates, two years, r = .30, SDy = $20,000, lambda = .3989, and cost = $300 each.

How should utility results be communicated to managers?

Use clear language, avoid excessive jargon, and make conservative estimates of SDy.