Nan Kong

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Questions related from Nan Kong

Why Total Score has the relationship between Overall Score and Sub-scores while IRT-Ability Score Has Not?

Total Score is defined with the number of those correctly-responded (dichotomous) items; Sub-score is defined as the total score associated with the sub-scale; Overall Score is defined as the...

11 July 2019 3,826 2 View

How the overall score is related to their subscale scores?

This is the third section of Items Decomposition: How to structure the Scores and Items. This section describes, using the graphical representation, how the score associated with all items in a...

08 June 2018 9,210 4 View

Which one should we trust --Item Response Theory (IRT) or Total Score?

In practice, IRT (2PL/3PL) and Total Score may not be consistent. In case that, for two examinees, say S1 and S2, there are IRT ability (S1) > IRT ability (S2) Total...

01 January 1970 2,994 17 View

Item Response Theory (IRT) does not measure test-takers' ability (2)?

The theta parameter (latent variable) in Item Response Theory (IRT) is not a measure for test-takers' ability although it may be positively correlated to the test-takers' ability. Lets start with...

01 January 1970 10,061 7 View

Item Response Theory (IRT) does not measure test-takers' ability (1)?

The theta parameter (latent variable) in Item Response Theory (IRT) is not a measure for tester-takers' ability although it may be positively correlated to the test-takers' ability? The comment...

01 January 1970 5,306 2 View

Why Psychophysical Methods Measure Nothing without Additivity?

"When in 1940, a committee established by the British Association for the Advancement of Science to consider and report upon the possibility of quantitative estimates of sensory events published...

01 January 1970 10,037 4 View

How to handle Testing Item Importance Level with General Total Score

Testing item is not only associated with a difficulty level, but also associated with an importance level. Therefore, an item with high difficult level may or may not be of high importance level....

01 January 1970 6,213 0 View

Commentary on An entropy-based measure of dependence between two groups of random variables

In the article An entropy-based measure of dependencebetween two groups of random variables, the K-dependence coefficient ordependence coefficient is defined with entropy and conditional entropy...

01 January 1970 9,437 0 View

General Total Score and Item Analysis

In this essay, General Total Score (GTS)-based (testing) item analysis is discussed in (1) item difficulty analysis; (2) item decomposition; (3) K-dependence coefficient (uncertainty coefficient)...

01 January 1970 4,954 2 View

Item Analysis based on General Total Score

In this essay, General Total Score (GTS)-based (testing) item analysis is discussed in (1) item difficulty analysis; (2) items decomposition; (3) K-dependence coefficient (uncertainty coefficient)...

01 January 1970 9,270 1 View

Item Response Theory and Its General Total Score ! ?

Item Response Theory (IRT) introduces a parametric structure with two sets of parameters, one set of parameters is related to (testing) item characteristics while another set of parameters (latent...

01 January 1970 7,615 0 View