cronbach's alpha

  1. G

    Can the reliability be used using Cronbach's alpha when the base of the respondent for each question is different?

    For example, in the survey on job satisfaction, questions A1 to A10 consist of items related to work-life balance. At this time, the survey was conducted for all respondents in A1~A5, only white-collar in A6~A8, and only blue-collar in A9~A10. At this time, is it not unreasonable to measure the...
  2. C

    Testing hypothesis of difference in factor loadings across multiple scales in two questionnaires

    I'm unsure of how to test this hypothesis and would greatly appreciate your ideas: For illustrative purposes, let's assume that two groups of people (experts vs. novices) author a questionnaire with five scales (scale1 to scale5). Let's further assume that I have reason to hypothesize that when...
  3. C

    Comparing two dependent, non-overlapping correlations

    I have two questions regarding the comparison of two correlation coefficients from a single (paired / dependent) sample: Is it legitimate to use a test for comparing independent correlation coefficients instead? My understanding is that the only drawback is that this would compromise power...
  4. L

    Is cronbach alpha applicable ?

    Recently, I'm doing a pilot study for my questionnaires however I got 0.05 for my cronbach alpha. My questionnaires consist of two part : 1. Demographical parts ( also include things like likert scale) 2. BDI inventory ( Beck Depression Inventory) The problem is the result of SPSS told me...
  5. A

    Quick Cronbach's Alpha Question

    Hi all, This may seem like a silly question, but I was wondering if I should remove outliers prior to running reliability analysis or run the tests with outliers included. I am hoping to get a Cronbach's alpha values for three questionnaires that I used in my research.
  6. K

    Problem with the reliability analysis and factor analysis.

    Hi, As I am working on the statistical research for my graduation, I encountered two problems; 1) I am measuring two multi-dimensional concepts, and I used a factor analysis to measure the components. One of these concepts turned out to consist of 6 components. I regrouped all items...
  7. Eaners

    Cronbach's alpha: Same scale, multiple scenarios... special calculation needed?

    Hi everyone, I'm working on data for my dissertation and had a question regarding Cronbach's alpha. In a pretest, I asked just over 100 subjects to rate their perceptions of privacy of nine different environments. The scale used for each of the nine environments was the same six-item...
  8. P

    Reliability, validity, cronbach alpha figures for Method/measures section

    Hi, My research is on people on particular visas in the US, i.e., immigrants and mostly Asians. In my methods section when I write about the measures, where do I get the Reliability, validity, cronbach alpha figures from? Firstly, do I search for previous research on Asians or on...
  9. A

    Composite reliability vs Cronbach's alpha

    Hello Wondering if someone could clarify I'm developing a new measure with 10 constructs. Each construct has between 4 - 6 items. I've been assessing the reliability for each construct using both Cronbach's alpha and composite reliability scores. For most constructs, both...
  10. G

    Comparing Cronbach's alpha intraclass correlations with varying rater permutations

    I've done a study for my PhD comparing different methods/conditions that might affect inter-rater agreement when rating the creativity of other people's drawings. I had 600+ drawings that needed to be rated, so it wasn't feasible to have the same few people rate all the drawings. So 24 raters...
  11. R

    Which test of reliability to use?

    Hi, I am unsure of if I am to use different tests of reliability for different types of data sought by the same questionnaire, or if one test may be applicable to all of my data? I have a mixture of nominal and interval data. When testing the data using Alpha my results came back very low...
  12. O

    confused about factor analysis output

    Hi, I have 100 participants answering an aesthetic scale ( 8 items in the scale) in my data. The question is "rate the following statements from 1= strongly disagree to 7= strongly agree". I copied 2 statements from my scale below. 1/Owning products that have superior designs makes me...
  13. C

    cronbachs alpha using repeated administrations on same subjects ?

    This will be an easy question for someone but I just can't find the answer via google or my text books I have a 30 item measure, an observation schedule, not standardised, and I would like to cite cronbachs alpha for it. I used it in an n=3 within subject design (psychology) where each...
  14. G

    Negative combach's alfa in evidence based questionnaire

    Hey everyone, For a small research I had to do I used the Rosenberg Self-esteem scale and tried to look for correlations with aggression using the Buss Perry Aggression Scale. Even though it proved very much insignificant I also found a negative crombach's alfa linked to the rosenberg...
  15. J

    Low cronbach's alpha - any remedy?

    Hi there, I want to construct a scale of 'contacting government' based on the question 'Please indicate if in the past year you contacted govt about any of the following services.' --There is a list of 14 different topics. The factor analysis (result attached) shows what to me what are...
  16. J

    Cronbach's alpha with weighted data

    Hi I have a test whose reliability I want to calculate, using Cronbach's alpha. The first 18 questions are scored 0 or 1 (right or wrong). The final 7 questions are scored 0, 1 or 2 (because they are not dichotomously right or wrong, there exists a 'half right' possibility). Is it correct...