Social learning mechanisms, such as descriptive norms for drinking behavior (norms) and positive alcohol expectancies (PAEs), play a major role in college student alcohol use. According to the principle of reciprocal determinism (Bandura, 1977), norms and PAEs should be reciprocally associated with alcohol use, each influencing one another over time. However, the nature of these prospective rel...

Two lines of mice, M16 selected for rapid growth and a randomly selected control ICR as well as their reciprocal crosses were used to study the effects of genotype on whole-body energetics and intestinal responses to monensin. Six mice, eight weeks of age, from each line or reciprocal cross were assigned to one of two treatments, 1) drinking water containing 20 mmol/L monensin dissolved in 0.5%...

I N 1922, J. B. S. HALDANE stated: “When in the F, offspring of two different animal races one sex is absent, rare, or sterile, that sex is the heterozygous [heterogametic or Xu] sex.” This is one of a few general rules in evolutionary biology. Indeed, many hybrid crosses obey HALDANE’S rule especially in sterility, but exceptions are not rare in inviability: Nine such cases are known in 23 Dro...

The F344 rat carries alleles contributing to bone fragility while the GK rat spontaneously develops type-2 diabetes. These characteristics make F344×GK crosses well suited for the identification of genes related to bone size and allow for future investigation on the association with type-2 diabetes. The aim of this study was to identify quantitative trait loci (QTLs) for bone size phenotypes me...

Cross-lagged analysis of panel survey data collected from Taiwanese college students (initially 387 males and 370 females) was used to examine the temporal relationship between problematic Internet use (PIU) and lifestyle changes during the first year in college. We hypothesized that a reciprocal relationship might exist between PIU and lifestyle changes. Structural equation modeling was adopte...

Antisera produced in rabbits to 37 rhinovirus (RV) types have been examined for antibody to the 36 corresponding heterologous types. Reciprocal neutralization was noted between RV types 2 and 49 and RV types 13 and 41. Five additional monotypic rhinoviral rabbit antisera neutralized one heterologous rhinovirus. Neutralizing antibody titers against heterologous RV serotypes were similar to those...

A major model system for the study of evolutionary divergence between closely related species has been the unisexual lethality resulting from reciprocal crosses of Drosophila melanogaster and D. simulans. Sex-lethal (Sxl), a critical gene for sex determination, is misregulated in these hybrids. In hybrid males from D. melanogaster mothers, there is an abnormal expression of Sxl and a failure of...

Drosophila melanogaster prefers to pupate in the dark, while its sibling species, D. simulans, prefers the light when the species are tested in isolation and when cultured and tested together. Reciprocal interspecific hybridizations were carried out and the F~ individuals were tested. Progeny from the cross of D. melanogaster females with D. simulans males chose pupations sites exactly intermed...

To examine reciprocal relationships between “virtual world”-context cyberspace positive-psychological states (CPSs) and “real world”-context positive-psychological states (PSs), this study conducted a two-wave panel design with about two-semester interval on 251 Taiwan college freshmen and analyzed the data using cross-lagged structural equation modeling. The analytical results show that CPSs h...