In recent years, research in the area of intervention development has been shifting from the traditional fixed-intervention approach to "adaptive interventions," which allow greater individualization and adaptation of intervention options (i.e., intervention type and/or dosage) over time. Adaptive interventions are operationalized via a sequence…

Many students struggle with statistical concepts such as interaction. In an experimental group, participants took a paper-and-pencil test and then were given training to establish equivalent classes containing four different statistical interactions. All participants formed the equivalence classes and showed maintenance when probes contained novel…

Second-generation immigrants are typically analyzed under the assumption that, having been born in the United States, they grew up in the United States. We challenge this assumption by investigating the prevalence and patterns of second-generation Mexican-American children's migration to and return from Mexico during childhood, and consider the…

An attempt at defining and describing those factors which most often jeopardize the validity of naturalistic behavioral data is presented. A number of investigations from many laboratories which demonstrate these methodological problems are reviewed. Next, suggestions, implementations, and testing of effectiveness of various solutions to these…

Findings based on extended analyses of cognitive, familial, personality, and social-behavioral data from two previous research investigations are presented. Data for the main study, i.e., the present study, was collected principally by means of interviews. Findings of the principal study include the following: (1) Parental figures living in the…