RE: Maximized lambda4

2001-11-19 Thread Wuensch, Karl L
Dennis asked "how do we know what a test's true reliability is?" Osburn knew because he simulated true-score covariance matrices and from these obtained observed score covariance matrices as a function of the true-score matrices and hypothetical values of reliability. More details are in

Re: Maximized lambda4

2001-11-19 Thread Dennis Roberts
At 01:49 PM 11/19/01 -0500, Wuensch, Karl L wrote: > Callender and Osburn (Educational and Psychological Measurement, >1977, 37, 819-825) developed a method for estimating maximized lambda4, the >greatest split-half reliability coefficient among all possible split halves >for a scale. The