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This article is addressed primarily to new researchers who feel burdened by an expanding body of ethical rules and regulations. Moral dilemmas proliferate as researchers try to strike a balance between ethical accountability and the technical demands of scientific practices. The challenge is to...
Publication bias, including prejudice against the null hypothesis, and other biasing filters may operate on researchers as well as journal editors and reviewers. A survey asked 33 psychology researchers to describe the fate of 159 studies approved by their departmental human subjects review...
This article argues for the use of contrasts to test a priori interaction hypotheses in 2-way analysis of variance designs. It focuses on 3 underused types of interaction contrast tests: a “matching” pattern for cognate levels of row and column factors; the “qualitative quadratic,” for...
This article describes methods for studying behavior when organisms are viewed as living control systems. These methods are aimed at determining the variables that organisms control when they are engaged in various observable behaviors. Controlled variables are perceptual representations of the...
Test–retest data can reflect systematic changes over varying intervals of time in a “ time-lag” design. This article shows how latent growth models with planned incomplete data can be used to separate psychometric components of developmental interest, including internal consistency...
The generality of latent variable modeling of individual differences in development over time is demonstrated with a particular emphasis on randomized intervention studies. First, a brief overview is given of biostatistical and psychometric approaches to repeated measures analysis. Second, the...
On the basis of recent work by ), implications of fallible observers for observational research are discussed. Analysis shows that for identically fallible observers, values for kappa are lower when codes are few and their simple probabilities variable than when codes are many and roughly...
The authors argue that commonly used ranking and rating methods of value surveys may have low validity in cross-cultural value comparisons because participants' reports about values can be affected by factors such as cultural differences in the meaning of particular value terms as well as the...
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