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Psychological Testing Questions and Answers

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are based on the following paragraph. Read the following paragraph and answer the five questions that follow :

A researcher is developing psychological test for measuring mathematical ability of normal sample. She used Item Response Theory (IRT) for the same. Responses are scored as correct/incorrect (0, 1). The data of 300 respondents was collected on 5-items. IRT models are 1PL (parameter b), 2 PL (Parameter b and a) and 3 PL (parameter, b, a and c). The data is as follows :

(b)(a)(c)
Item 11.81.0.03
Item 22.21.3.002
Item 31.30.5.08
Item 4-1.02.5.002
Item 53.22.3.02

1.

Which single item need to be removed from the test to make the test suitable for average ability individuals ?

Exam Year(s)

MH SET - 2024, SET Exam - 2024,

Answer: D

The item to remove is Item 5.

In IRT the b parameter is item difficulty on the same scale as ability, with average ability at about 0. An item suits people of a given ability when b is near their level.

Item 5 has b = 3.2, more than three units above the mean, so almost no average person would answer it correctly; it is the item furthest from average ability. Items 2 (b = 2.2) and 3 (b = 1.3) are also above average but much closer. Item 4 (b = -1.0) is an easy item, and removing it would make the test harder, not better suited to average examinees.

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2.

Which of the item/s is easy to guess ?

Exam Year(s)

MH SET - 2024, SET Exam - 2024,

Answer: B

The item easiest to guess is Item 3.

In the three-parameter model the c parameter is the pseudo-guessing parameter, the lower asymptote of the item characteristic curve: the chance that a very low-ability person still gets the item right.

Comparing the c column, Item 3 has c = .08, the highest. Item 1 has .03, Item 5 .02, and Items 2 and 4 only .002 each, so 'Item 4 and item 2' are in fact the hardest to guess, and Items 1 and 5 are easier to guess than they are but still below Item 3.

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3.

The measurement of interests began as a relatively narrow and specialised development in the study of which of the following?

Exam Year(s)

DSSSB PGT - 2023,

Answer: C

The key states that the measurement of interests began as a narrow, specialised development in the study of personality. Interest inventories grew out of attempts to describe the person's likes and dislikes as part of personality assessment. Aptitude, attitude and job orientation are named in the other options, but the key does not accept them.

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4.

Who standardised and adapted differential aptitude test for India?

Exam Year(s)

DSSSB PGT - 2023,

Answer: B

The key credits J. M. Ojha with standardising and adapting the Differential Aptitude Test for India. The Differential Aptitude Tests were originally made by Bennett, Seashore and Wesman in the United States. I could not verify the Indian adaptation history independently, so the key is followed as printed. The other three names are Indian psychologists associated with other tests and are not the key's choice.

The Differential Aptitude Tests measure verbal reasoning, numerical ability, abstract reasoning, clerical speed and accuracy, mechanical reasoning, space relations, spelling and language use.

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5.

Which of the following formula is used to determine reliability by the split-half method?

Exam Year(s)

DSSSB PGT - 2023,

Answer: A

The Spearman-Brown formula is used to estimate reliability by the split-half method, because correlating two halves of a test gives the reliability of only half the test length, and the formula steps this up to the full length. The Kuder-Richardson formulas and Cronbach's alpha measure internal consistency from all items, and there is no 'Wallis-Richardson formula' for reliability.

The split-half correlation is for half-length tests only, so the Spearman-Brown formula, r = 2r(hh) / (1 + r(hh)), is applied to find the reliability of the full test.

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6.

A combination of characteristics that indicates an individual's capacity to acquire some specific knowledge or skill after training is known as:

Exam Year(s)

DSSSB PGT - 2023,

Answer: A

Aptitude is a combination of characteristics that indicates a person's capacity to acquire a particular knowledge or skill after training. Attitude is a lasting evaluation of something, and 'psycho-social ability' and 'skilling ability' are not standard terms for this idea.

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7.

Which of the following tests indirectly assess(es) the unconscious part of human behaviour?

1. Word association test
2. Sentence completion test
3. Seguin form board

Exam Year(s)

DSSSB PGT - 2023,

Answer: D

Only the word association test and the sentence completion test indirectly assess the unconscious part of behaviour. These are projective techniques: the person responds to ambiguous or open material, and the response reveals hidden feelings and conflicts. The Seguin form board is a performance test of intelligence in which the person fits shaped blocks into a board, so it is not a probe of the unconscious, and options including 3 are wrong.

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8.

Behaviour analysis is used for which of the following?

Exam Year(s)

DSSSB PGT - 2023,

Answer: A

The key gives information about personality. Behaviour analysis studies what a person does in situations, to find out the features of the personality that appear in how the person behaves. Understanding the response pattern, the situational response style and the subjective well-being are not the use that the key names.

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9.

Which of the following is a method of estimating reliability coefficient of a test?

1. Parallel form
2. Split-half technique
3. Rational equivalence

Exam Year(s)

DSSSB PGT - 2023,

Answer: D

All three are methods of estimating reliability. The parallel (alternate) form method correlates scores on two equivalent forms of the test. The split-half technique correlates two halves of one test. The rational equivalence method (the Kuder-Richardson approach) estimates reliability from the inter-correlation of the items. So the options listing fewer than all three are incomplete.

A fourth way is the test-retest method, in which the same test is given twice to the same people and the two scores are correlated.

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10.

Which of the following is assessed when a test is divided into two equal halves employing odd even method (items 1, 3, 5- in one group and items 2, 4, 6- in another group) and correlation is computed between the scores of odd and even items?

Exam Year(s)

DSSSB PGT - 2023,

Answer: C

Dividing a test into two equal halves by the odd-even method and correlating the scores on the two halves assesses internal consistency, which is whether the items of the test measure the same thing. It is the split-half method of reliability. Correlational validity and criterial consistency are not the name of this check, and 'critical consistency' is not a psychometric term.

Odd-even splitting is preferred to a first-half, second-half split because fatigue and practice effects are spread equally between the two halves.

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