Week 5

Question 1

What are the chapters discussed in the lecture on personality and clinical questionnaires?

Answer 1

• Chapter 12: Objective personality questionnaires
• Chapter 13: Clinical instruments and methods

The lecture also relates strategies to construct tests to item response theory discussed in Chapter 6.

Question 2

What types of questionnaires are often used to determine personality traits?

Answer 2

• Self-reports
• Peer-reports

These questionnaires are used in contexts such as health care, clinical psychology, and personnel selection.

Question 3

The Rosenberg self-esteem scale includes how many items?

Answer 3

10

Items assess self-esteem through statements rated on a Likert scale.

Question 4

What does a Likert scale measure in the Rosenberg self-esteem scale?

Answer 4

• 1 = Strongly agree
• 2 = Agree
• 3 = Disagree
• 4 = Strongly disagree

The scale is used to assess responses to self-esteem statements.

Question 5

True or false: Objective personality assessments require professional training for scoring.

Answer 5

FALSE

Objective assessments have scoring that does not involve professional training.

Question 6

What is a drawback of contextual questionnaires?

Answer 6

Different questionnaires must be developed for each job

Contextual questionnaires have higher criterion validity than unconditional questionnaires.

Question 7

What is the main problem with personality questionnaires in university student selection?

Answer 7

Distortion of responses

Students may distort their responses, making it difficult to assess true personality traits.

Question 8

What are the two strategies to detect or minimize distortion in personality tests?

Answer 8

• Detection: Check for consistency on similar items
• Minimizing: Balancing direction of items

These strategies help ensure the validity of personality assessments.

Question 9

What does the forced-choice method in personality testing involve?

Answer 9

Selecting the statement that describes you best from paired statements

This method is used to reduce social desirability bias.

Question 10

What is the content strategy in personality test development?

Answer 10

Constructing tests based on common sense understanding of what to measure

An example is the Woodworth Personal Data Sheet.

Question 11

What does the criterion-keying strategy involve?

Answer 11

Selecting items that discriminate between two well-defined groups

This strategy is direct and simple, often used in clinical assessments.

Question 12

What is the MMPI used for?

Answer 12

To distinguish psychiatric patients from normal persons

It was developed based on scores from different types of psychiatric patients and control groups.

Question 13

What does the L-scale of the MMPI measure?

Answer 13

Fake good responses

High scores indicate a degree of virtue that is rarely observed.

Question 14

What does the F-scale of the MMPI indicate?

Answer 14

Fake bad responses

High scores suggest that the respondent endorses items rarely endorsed by normal individuals.

Question 15

What is a major problem with the criterion-keying approach?

Answer 15

It is atheoretical and only applicable when there are well-defined criterion groups

This can lead to unclear distinctions between groups.

Question 16

What does the Edwards Personal Preference Schedule (EPPS) measure?

Answer 16

• Achievement
• Deference
• Order
• Exhibition
• Autonomy
• Affiliation
• Intraception
• Succorance
• Dominance
• Abasement
• Nurturance
• Change
• Endurance
• Heterosexuality
• Aggression

EPPS is based on Murray’s theory of needs.

Question 17

What is the factor analytic strategy in personality test development?

Answer 17

Identifying dimensions underlying a set of items

This empirical method checks for basic dimensions of human personality.

Question 18

What is the NEO-PI-R designed to provide?

Answer 18

A general description of normal personality

It is relevant to clinical, counseling, and educational situations.

Question 19

What is a drawback of the Myers-Briggs Type Indicator (MBTI)?

Answer 19

Not valid, with weak empirical support for classifications

Research shows low test-retest reliability and unclear factor structure.

Question 20

What does the item response theory (IRT) focus on?

Answer 20

The item characteristic curve (ICC)

IRT is used to investigate the quality of items and tests.

Question 21

What does ICC give the relation between?

Answer 21

A trait value and the probability of answering an item correctly

ICC stands for Item Characteristic Curve, which is used in item response theory (IRT).

Question 22

What does theta represent in IRT?

Answer 22

A standardized transformed total score

Theta may represent traits like intelligence, personality, psychopathology, or knowledge about statistics.

Question 23

In IRT, what does a theta value of +1 indicate?

Answer 23

1SD above the mean score in the population

This indicates a higher trait level compared to the average.

Question 24

What is plotted on the Y-Axis in IRT?

Answer 24

The probability of correct responses

This is computed for each theta value.

Question 25

What are the parameters of the curve in IRT used to describe?

Answer 25

* Item difficulty (bi) * Slope (ai) * Guessing (ci) ## Footnote These parameters help define the characteristics of each item in the test.

Question 26

What does the **guessing parameter (ci)** represent?

Answer 26

Lower asymptote, the probability of a correct answer with no knowledge ## Footnote This is relevant in cognitive and non-cognitive testing.

Question 27

What is the **item difficulty (bi)** in IRT?

Answer 27

The point on the trait scale where the probability of a correct answer equals (1 + ci)/2 ## Footnote This indicates how challenging an item is.

Question 28

What does the **item discrimination (ai)** indicate?

Answer 28

The slope of the ICC; higher slope means better discrimination ## Footnote This helps differentiate between individuals with varying trait scores.

Question 29

What is the practical value of using **ICCs**?

Answer 29

To see where an item discriminates between different theta values ## Footnote This extends classical test theory (CTT) by providing more detailed insights.

Question 30

What does IRT allow you to estimate regarding **measurement precision**?

Answer 30

Reliability as a function of the trait value ## Footnote This is not possible using classical test theory.

Question 31

What does the **SE (θ)** formula represent in IRT?

Answer 31

SE (θ) = 1/ √I(θ) ## Footnote This shows how measurement precision varies with the trait level.

Question 32

What is the **test information** in IRT?

Answer 32

The sum of the item information functions ## Footnote This helps in selecting items that provide optimal information.

Question 33

What is the **target information function** used for?

Answer 33

To specify the SE (θ) of interest for selection purposes ## Footnote This is useful in personnel or student selection.

Question 34

To select persons 1SD above the mean, what should the test have?

Answer 34

The smallest SE (= highest information) around θ = 1 ## Footnote This ensures effective selection criteria.

Question 35

True or false: IRT allows for the inspection of local reliability using the information function.

Answer 35

TRUE ## Footnote Local reliability is assessed as a function of the trait.

Question 36

What is the significance of **item information functions**?

Answer 36

They provide information about the precision of the estimate of θ ## Footnote This is crucial for understanding how well items perform across different trait levels.