Sedat Batmaz

8 Questions 25 Answers 0 Followers

Questions related from Sedat Batmaz

What needs to be done if the groups differ from each other on scores of questionnaires at the start of the study?

We have two groups, and one of the groups is offered a group therapy treatment, while the other group is on the waitlist. Before starting the treatment, both groups were asked to complete some...

06 June 2018 4,045 4 View

How do you compare sensitivity and specificity values statistically?

Is there a statistical method that would allow to compare three sensitivity - specificity values of different psychometric scales on the same outcome?

02 February 2017 7,125 16 View

How do I continue with my analysis if the Box's M and Levene's tests are significant in MANOVA?

I am trying to run a MANOVA, but the Box's M and Levene's tests are significant. Does this mean I can not run a MANOVA? Is it OK to continue if I choose to report Pillai's trace in stead of Wilks'...

01 January 2017 6,684 12 View

Which correlational analysis do I need to choose between three psychometric tests and a yes/no type variable?

I have four variables. Three of them are the total scores of various psychometric tests, and one of them is a clinical variable coded yes = 1 / no = 0. I need to compute correlational analyses...

01 January 2017 2,293 17 View

What are the acceptable minimum values for sensitivity and specificity for identification accuracy in social sciences/psychometrics?

I need to compute the sensitivity and specificity of a screening tool, and I will report the sensitivity and specificity of it. Are there any rule of thumbs that might suggest what the bare...

07 July 2016 1,310 4 View

How do I do an exploratory factor analysis on a scale which consists of binary coded (yes=1, no=0) answers?

I want to run an exploratory factor analysis (EFA) on a questionnaire consisting of 9 yes/no answered questions. Is it OK to run an EFA on a scale with binary coded questions?

07 July 2016 9,080 9 View

How do I compute the internal consistency of a scale which is made up of binary coded (yes=1, no=0) answers?

I have a sclae consisting of 9 questions, and all of its questions are answered in the yes/no format. I want to compute the internal consistency of this scale. Is it OK to use Cronbach's alpha in...

07 July 2016 9,737 12 View

How are the low, moderate and high posttraumatic growth scores of the Posttraumatic Growth Inventory (PTGI) computed?

I came across different definitions of low, moderate and high growth, but I have not been able to find a reliable reference to cite where these definitions are presented. Some suggest adding up...

01 January 1970 4,694 4 View