Psychometrics and Standardized Scores

What type of scale is described in Figure 3.3?

Semantic differential scale

In an intensity scale, how are the extreme poles of the response scales anchored?

With descriptors in between

How many response categories can be used in intensity scales?

Seven

What is the purpose of obtaining scores on different dimensions in a semantic differential scale?

To create a summary profile of the respondent Signup and view all the answers

What does an intensity scale lack between the two extreme poles?

Response categories Signup and view all the answers

Which type of scale assumes equal intervals between points?

Semantic differential scale Signup and view all the answers

What distinguishes categorical data from continuous data?

Categorical data is in discrete categories while continuous data is measured on a continuum. Signup and view all the answers

Which type of data uses a nominal scale for measurement?

Categorical data Signup and view all the answers

In an ordinal scale of measurement, what do the assigned numbers indicate?

Sequential ordering or amounts of an attribute Signup and view all the answers

How does one distinguish between nominal and ordinal measurement levels?

Nominal uses numbers to code attributes while ordinal ranks objects based on order Signup and view all the answers

Which example illustrates the use of an ordinal scale?

Ranking of rugby players based on their position numbers Signup and view all the answers

How is continuous data different from categorical data?

Continuous data represents a continuum, while categorical data has a nominal scale. Signup and view all the answers

What is the defining characteristics of a standard normal distribution?

Mean of 0 and standard deviation of 1 Signup and view all the answers

Why are raw scores obtained by test-takers on psychological measures converted to normal scores?

To provide a meaningful interpretation Signup and view all the answers

What is the importance of establishing norm groups in selection procedures?

To ensure fairness and comparability Signup and view all the answers

How are similarities between norm groups and applicant/incumbent populations determined?

By comparing ethnicity, gender, age, and educational background Signup and view all the answers

Which two subgroups constitute norm groups in selection procedures?

Applicant pool and incumbent population Signup and view all the answers

What is the purpose of establishing norm groups as the comparative base for tests?

To provide a reference point for test scores Signup and view all the answers

What is the mean and standard deviation for the stanine scale?

Mean of 5 and standard deviation of 1.96 Signup and view all the answers

How many scale units does the stanine scale consist of?

9 Signup and view all the answers

What is the primary disadvantage of stanine scales?

They are approximate as they have only 9 scale units Signup and view all the answers

What is the transformation formula for normalised standard scores (ZN) to McCall’s T-score?

$T = ZN10 + 50$ Signup and view all the answers

Which scale reflects the person’s position in relation to the normative sample and is evident in rank order?

Stanine scale Signup and view all the answers

How many scale units does the sten scale consist of?

10 Signup and view all the answers

What is a potential issue when a cut-off score is determined for the whole group, but the measure has differential predictive validity for various subgroups?

One subgroup may be discriminated against Signup and view all the answers

What is the main challenge in eliminating bias in selection decisions?

Statistics can only address part of the issue Signup and view all the answers

What is the primary goal when trying to balance conflicting goals in selection decisions?

Providing equal employment opportunities Signup and view all the answers

What is emphasized as necessary to achieve a better demographic spread in the workforce?

Open discussion and successive approximations Signup and view all the answers

What cannot correct social inequalities?

Statistics Signup and view all the answers

In relation to the text, what is the purpose of various models proposed to decrease selection bias?

Increase fairness of selection decisions Signup and view all the answers