A cluster of cooperating tumor-suppressor gene candidates in chromosomal deletions

The large chromosomal deletions frequently observed in cancer genomes are often thought to arise as a "two-hit" mechanismin the process of tumor-suppressor gene (TSG) inactivation. Using a murine model system of hepatocellular carcinoma (HCC) and in vivo RNAi, we test an alternative hypothesis, that such deletions can arise from selective pressure to attenuate the activity of multiple genes. By targeting the mouse orthologs of genes frequently deleted on human 8p22 and adjacent regions, which are lost in approximately half of several other major epithelial cancers, we provide evidence suggesting that multiple genes on chromosome 8p can cooperatively inhibit tumorigenesis in mice, and that their cosuppression can synergistically promote tumor growth. In addition, in human HCC patients, the combined down-regulation of functionally validated 8p TSGs is associated with poor survival, in contrast to the down-regulation of any individual gene. Our data imply that large cancer-associated deletions can produce phenotypes distinct from those arising through loss of a single TSG, and as such should be considered and studied as distinct mutational events

Is there a foreign language effect on workplace bribery susceptibility? Evidence from a randomized controlled vignette experiment

Abstract: Theory and evidence from the behavioral science literature suggest that the widespread and rising use of lingua francas in the workplace may impact the ethical decision-making of individuals who must use foreign languages at work. We test the impact of foreign language usage on individuals' susceptibility to bribery in workplace settings using a vignette-based randomized controlled trial in a Dutch student sample. Results suggest that there is not even a small foreign language effect on workplace bribery susceptibility. We combine traditional null hypothesis significance testing with equivalence testing methods novel to the business ethics literature that can provide statistically significant evidence of bounded or null relationships between variables. These tests suggest that the foreign language effect on workplace bribery susceptibility is bounded below even small effect sizes. Post hoc analyses provide evidence suggesting fruitful further routes of experimental research into bribery

Public service motivation and prosocial rule-breaking: An international vignettes study in Belgium, Germany, and the Netherlands

We theorize that people with high Public Service Motivation (PSM) are especially prone to engage in prosocial rule-breaking (PSRB) behavior, which ultimately leads to discriminatory practices, particularly for clients associated with positive affect. We conduct an original vignette study in three countries (Belgium, Germany, and the Netherlands) with 928 observations in total. Our findings provide tentative behavioral evidence on a linear relationship between PSM and the likelihood of PSRB and a strong positive association with client likeability, which is an asymmetric relationship: Negative affect cues have a larger negative effect than positive affect cues have a positive effect on PSRB. Although our results vary across the three country studies regarding the effects of PSM, overall, the results imply that high-PSM individuals have a tendency to being more likely to engage in PSRB and that clients who are perceived as more favorable will receive a less strict application of bureaucratic rules compared to less favorable clients