Psychometrics Theory schemes(CTT and IRT) and examples of applications of each technique
Mercedes Orus Lacort
- 1st edi.
- [Y.Y.] Lulu 2014
- 125 p. table, graphic 23.4 cm
VALIDATION 15 Validation Concerning the Construct ( Validation of Internal Structure) by the Technique of Principal Component Analysis (PCA) 15 Validation Concerning the Construct (Validation of internal Structure ) through the Study of the one-dimensionally of Each scale of the test 23 Validation referring to the Criterion : Concurrent of predictive 26 Validation Referring to the Criterion Convergent or Discriminant 29 Validation referred to the Criteria: Validity Coefficient 33 RELIABILITY 37 Calculation of the Coefficient of reliability relating to the internal consistency of a scale Using Cronbach's Alpha Coefficient 37 Calculation of the Coefficient of the coefficient of reliability relating to the internal consistency of a scale using the Strategy of the two parts and using the coefficient of Rulon 43 Calculation of the Coefficient of reliability relating to the Internal Consistency of a scale Using the Strategy of the two halves and using the coefficient of Guttman Flanagan 45 Calculation of the coefficient of reliability relating to the internal consistency of a scale Using the strategy of the two halves and using the spearman-Brown coefficient 48 Method for Increasing the reliability of a test ( or a test scale) Increasing the number of items 50 Calculation of the coefficient of reliability relating to the internal Consistency of a scale Using the matrix of Correlations of the items of the scale 52 Calculation of the confidence interval for the true score of a subject 53 Hypotheses Test for the Cronbach's alpha coefficient in a sample of subject to know whether or not it is statistically Significant 55 Hypothesis test to compare the Cronbach's alpha coefficient in two samples of independent subject 58 Hypothesis test to compare the Cronbach's alpha coefficient in two sample of independent subjects 59 Calculation of the breakpoint (Criterion) Using the Angloff method 61 Calculation of the Reliability coefficient referred to the criterion of Hembleton Novick 62 Calculation of the reliability coefficient referred to the Criterion of Kappa Cohen 64 Hypothesis test of the coefficient of reliability of Livingston referred to a single test and depending on the point of cutting 67 INDEX OF ITEMS 71 Validity Index Item on a Scale 71 Index of difficulty of an item 72 Discrimination Index of an item 75 Homogeneity index of an item 76 DICHOTOMOUS ITEMS 77 Sensitivity Index 77 Specificity Index 78 IRT FOR DICHOTOMOUS ITEMS 81 Advantages of the IRT 81 Requirements for application of the IRT: unidimensionality and local independence 82 Item Characteristics curve (icc) 83 Logistic model 1Parameter logistic model 84 2-Parameter Logistic model 90 3-Parameter Logistic Model 97 IRT ITEMS POLYTOMOUS 99 Introduction 99 Nominal Response Model 104 Partial Credit Model 109