The growing importance of genomics and bioinformatics methods and paradigms in biology has been accompanied by an explosion of new curricula and pedagogies. An important question to ask about these educational innovations is whether they are having a meaningful impact on students' knowledge, attitudes, or skills. Although assessments are…

Investigates the use of "vague quantifiers" (terms such as "often,""sometimes,""rarely," or "never") in communication research. Finds that these words do not always mean the same thing to different people, and thus may not constitute interval scales. Suggests that research outcomes based upon such…

Some procedures for estimating internal consistency reliability may be superior mathematically to the more commonly used methods such as Coefficient Alpha. One problem is computational difficulty; the other is the possibility of overestimation due to capitalization on chance. (Author/CTM)

Presents an attempt to cross-validate a widely used set of standard credibility scales. Finds that the Meyer modification of the Gaziano-McGrath scales appears to validly and reliably measure credibility per se but that a second set of scales posited to measure community affiliation is not sufficiently reliable in its current form for use without…

Demonstrates that some commonly used indices can be misleading in their quantification of reliability. The effects are most pronounced on gain or difference scores. Proposals are made to avoid sources of invalidity by using a procedure to assess reliability in terms of upper and lower limits for the true scores of each examinee. (Author/JDH)

An issue facing researchers who study very select populations is how to obtain reliability estimates on instruments. When the populations and resulting samples are very small and select, the ability to obtain reliability estimates becomes very difficult. As a result, many researchers ignore reliability concerns and forge ahead with data…

The study investigated statistically significant correlations between levels of test anxiety and socioeconomic status among college sophomores and juniors. The Anxiety Scale (Alpert and Haber) was administered to students in an educational psychology course. Administrations were conducted at a neutral time, 45 days prior to the final exam, and…

Because the science of nursing is still at an early stage of development, nurses involved in clinical research often find that no appropriate measures are available to sample the theoretical construct of interest. Researchers often must design and test new instruments before proceeding to test theory. A study of the effect of nurse-client…

Although reliability and validity are characteristics of test data, social scientists often attribute reliability and validity erroneously to the tests themselves. To determine the extent to which this problem exists, 150 reliability and validity studies selected from 3 prominent social science measurement journals over a 3-year period were…

Various self-report test anxiety instruments were examined with attention given to their reliability and validity. Treatments directed toward test worry were more effective than treatments directed toward test emotionality. Self-reported test anxiety was found to decrease as a result of most treatment including pseudotherapy. (Author/CP)

Kramer's study supporting the construct validity of the Fundamental Interpersonal Relations Orientation-Behavior (Firo-B) scale was replicated in this experiment. The significantly different results reported by Froehle may be due to differences in the populations sampled and in their environment. (GDC)

This study reexamines results reported by Angoff and Schrader regarding formula directions and rights directions for standardized tests. In that study, it was concluded that the two scoring directions were essentially equivalent. In this study, methodological concerns are discussed and additional data analyses undertaken. Among various…

Dissertations are an important component of the effort to generate knowledge. Thus, dissertation quality may be seen by accreditation and coordinating-board reviewers as a noteworthy reflection on the quality of doctoral programs themselves. The present study reviews methodological errors within Ph.D. dissertations. The illustrative errors are…