Tagged Questions

3
votes
1answer
48 views

EFA clearly supports one-factor, measure is internally consistent, but CFA has poor fit?

I am exploring the psychometric properties of a 10-item self-report measure. I have about 400 cases in two independent samples. The items are completed on 4-point Likert scales. An EFA clearly ...
0
votes
2answers
87 views

Error message from grm() in ltm: subscript out of bounds

I am analyzing a survey data set. One of the items in the survey is: ...
0
votes
1answer
694 views

Likert scale and yes/no calculation of one score

My survey is based on observations and interviews. The observation questions are yes/no type questions and interview questions are 4 points. 1 = never, 2 = sometimes, 3 = usually, and 4 = ...
2
votes
1answer
72 views

How to equate questionnaires with different response scales

I'm trying to help out a not-for-profit organization and made an error that I'm trying to fix. They've been doing a non scientific survey of their Board of Directors for a number of years regarding ...
0
votes
0answers
162 views

Survey Data - Factor Analysis

I was hoping you could help with this question. I have a survey, a 30-item instrument. I've got 18 responses back from this. I also have a paper in which they've done a principal axis factor ...
1
vote
2answers
156 views

Establishing that the population sampled of two separate surveys is the same

I have two surveys of two separate populations (I don't know that they are necessarily distinct, but they are from two different databases) that ask a similar set of questions. Some questions are ...
7
votes
2answers
2k views

Validating questionnaires

I am designing a questionnaire for my dissertation. I am in the process of validating the questionnaire I have applied a Cronbach's alpha test to the initial sample group. The responses to the ...