Resources For:

Partners

placeholder

Psychometrics

Partners

April 2018 – Mojo Ad Parlor Canva Google Search Console – Create a generic Gmail account and ask client to be added to you can see reports Look at performance:  Then make sure clicks, impressions and average position are highlighted Why search terms could Partners target? Google Analytics – Setting up Conversions? Audience -> Overview  (Bounce […]

arnold on Feb 12, 2018

placeholder

construct validity

What is Validity?

Cronbach (1971) described validation as the process by which a test developed or test user collects evidence to support the types of inferences that are to be drawn from test scores. Nunnally and Bernstein (1994) say the term validity denotes the scientific utility of a measuring instrument, broadly statable in terms of how well it […]

arnold on Oct 17, 2008

placeholder

cronbach's alpha

What Are Some References For Cronbach’s Alpha?

What are some citations to use for Cronbach’s Alpha? Green, S.B., Lissitz, R.W., and Mulaik, S.A.(1977) Limitations of coefficient alpha as an index of test unidimensionality. Educational and Psychological Measurement, 37, 827-838. Hattie, J. (1985) Methodology Review: Assessing unidimensionality of tests and items. Applied Psychological measurement, 9, 2, 139-164. Feldt, L.S., Woodruffe, D.J., and Salih, […]

arnold on Oct 17, 2008

placeholder

assumptions of classical true score model

Do Interrater Correlations Estimate the Reliability of Job Performance Ratings?

It depends on who you ask. Some Researchers would say yes. They argue that correlations between ratings provided by multiple raters provide the “correct” estimates of the reliability of job performance ratings (Schmidt & Hunter, 1996; Viswesvaran et al., 1996). However, Murphy and De Shon (2000) provide an interesting insight into why this may not […]

arnold on Oct 09, 2008

What is a Thurstone Scale?

Psychometrics

What is a Thurstone Scale?

Thurstone invented three different methods for developing a unidimensional scale. The three methods differed in how the scale values for items were constructed, but in all three cases, the resulting scale was rated the same way by respondents. The rest of this example will concentrate on his Method of Equal-Appearing Intervals. Steps from SocialResearchMethods.net1) The […]

arnold on Oct 05, 2008

placeholder

Psychometrics

What is a True Score?

A True Score would be the average of observed scores obtained over an infinite number of repeated testings with the same test. The essence of Spearman model was in that any observed test score could be envisioned as the composite of two hypothetical components- a true score and a random error component: X=T+E, where X- […]

arnold on Oct 05, 2008