Read the following passage and answer the questions : Ishita, a Psychometrician generated 120 items in July 2021 to develop a tool on pro-environmental behaviour with five response patterns starting from 'Strongly Disagree' to 'Strongly Agree'. She retained 85 items based upon item-total correlation. Then she verified internal consistency of the items using data collected from 800 respondents in Dec, 2021. Ms Ishita named five dimensions extracted by her through exploratory factor analysis in March 2022. Thereafter she collected data from 400 respondents and accomplished measurement model analysis through confirmatory factor analysis in Nov, 2022.
Which of the following method has been used to verify reliability?
Examining Psychometric Reliability Methods
The passage describes Ishita's process of developing a psychometric tool. A key step mentioned is when she "verified internal consistency of the items".
Understanding Internal Consistency
Internal consistency reliability refers to the extent to which different items on a test that propose to measure the same general construct produce similar scores. It assesses the inter-relatedness of items within a measure.
Evaluating Reliability Options
Let's analyze the options provided in relation to verifying internal consistency:
- Test-Retest method: Measures stability over time, not internal consistency.
- Spearman-Brown prophecy method: Estimates reliability change due to test length alteration.
- Kuder-Richardson method: Used specifically for dichotomous items (e.g., yes/no, true/false).
- Cronbach-Alfa method: A widely used statistic for measuring internal consistency, particularly suitable for scales with multiple response options like Likert scales ('Strongly Disagree' to 'Strongly Agree'), which Ishita used.
Conclusion on Reliability Verification
Given that Ishita verified internal consistency and the scale has multiple response patterns, the Cronbach's Alpha method is the most appropriate and commonly used technique among the given options to assess this type of reliability.
Important Questions from Research Designs
On the basis of the procedure of inquiry, which of the following are types of case study?
A. Intrinsic case study
B. Descriptive case study
C. Evaluative case study
D. Instrumental case study
E. Interpretative case study
Choose the most appropriate answer from the options given below:
Which of the following studies is used for clinical analysis?
- Match List - I with List - II :
List - I List - II A. Study of the life style of Indian people between 1900 to 1947 I. Descriptive research B. Testing significance of difference between job satisfaction of government and non-government employees II. Ethnographic research C. Study of effectiveness of Yoga exercises on mental health of policemen III. Historical research D. Study of nomadic people's perception regarding their life in real situation IV. Experimental research
Choose the correct answer from the options given below: What would be the correct sequence while developing a robust questionnaire ?
A. Curricular Validity
B. Confirmatory Factor Analysis
C. Item Discrimination Index
D. Exploratory Factor Analysis
E. Norm development
Choose the correct answer from the options given below:
What are true from the following about Factorial Design ?
A. There are more than one dependent variable.
B. There are more than one independent variable.
C. Dependent variable is continuous in nature.
D. Independent variable is continuous in nature.
E. Factors are extracted through factor loadings.
Choose the correct answer from the options given below :
