Capuchins’ (Cebus apella) sensitivity to others’ goal-directed actions in a helping context

As humans, our ability to help others effectively is at least in part dependent upon our capacity to infer others’ goals in a variety of different contexts. Several species of nonhuman primate have demonstrated that they will also help others in some relatively simple situations, but it is not always clear whether this helping is based on an understanding of another agent’s goals. Although the results of a number of different studies support the hypothesis that chimpanzees represent others’ goals in various helping contexts and are sensitive to these goals when actually helping others, less work has addressed whether more distantly related species actively represent goals when helping. To explore the cognitive mechanisms underlying helping behaviors in species less closely related to humans, we tested whether a species of New World monkey—the brown capuchin (Cebus apella)—would provide an experimenter with a desired out-of-reach object more often than an alternative object when the experimenter attempted to obtain the former object only. We found that capuchins reliably helped by providing the experimenter’s goal object (Experiment 1) and that explanations based on the use of several less sophisticated strategies did not account for the overall pattern of data (Experiments 2–4). Results are thus consistent with the hypothesis that capuchins help others based on an understanding of their goals although more work is needed to address the possibility that capuchins may be responding to gestural and postural factors alone.     

A Test of Two Positive Psychology Interventions to Increase Employee Well-Being

Purpose

Despite an abundance of organizational research on how contextual and individual difference factors impact well-being, little research has examined whether individuals themselves can take an active role in enhancing their own well-being. The current study assessed the effectiveness of two simple, self-guided workplace interventions (“gratitude” and “social connectedness”) in impacting well-being.

Design/Methodology/Approach

Sixty-seven university employees participated in one of the two self-guided interventions for 2 weeks and completed self-report measures prior to the intervention, immediately following the intervention, and one-month post-intervention. Growth curve modeling was used to examine the effects of each intervention.

Findings

Partially supporting hypotheses, the gratitude intervention resulted in significant increases in positive affective well-being and self-reported gratitude but not did significantly impact negative affective well-being or self-reported social connectedness. The social connectedness exercise did not significantly impact any of those four outcomes. However, both interventions related to a reduction in workplace absence due to illness.

Implications

The study suggests that self-guided, positive psychology interventions (particularly gratitude) hold potential for enhancing employee well-being. Because the interventions are short, simple, and self-guided, there is little in the way of costs or drawbacks for organizations. Thus, these types of interventions seem like a potentially useful component of workplace wellness initiatives.

Originality/Value

This study is one of the few to examine whether self-guided, positive psychology interventions can enhance well-being. Moreover, this is the first study to examine a social connectedness workplace intervention and the first to demonstrate effects on illness-related absence.     

Null Results in Assessing Survey Score Comparability: Illustrating Measurement Invariance Using Item Response Theory

In using organizational surveys for decision-making, it is essential to consider measurement equivalence/invariance (ME/I), which addresses the questions of whether score differences are attributable to differences in the latent variable we intend to measure, or attributable to confounding differences in measurement properties. Due to the tendency for null results to remain unpublished, most articles have focused on findings of, and reasons for violations of ME/I. On the other hand, little is available to practitioners and researchers concerning situations where ME/I can be expected to uphold. This is especially disconcerting due to the fact that the null is the desired result in such analyses, and allows for unfettered observed-score comparisons. This special issue presents a unique opportunity to provide such a discussion using real-world examples from an organizational culture survey. In doing so we hope to clear up confusion surrounding the concept of ME/I, when it can be expected, and how it relates to actual differences in scores. First, we review the basic tenets and past findings focusing on ME/I, and discuss the item response theory differential item functioning framework used here. Next, we show ME/I being upheld using organizational survey data wherein violations of ME/I would reasonably not be expected (i.e., the null hypothesis was predicted and supported), and simulate the consequences of ignoring ME/I. Finally, we suggest a set of conditions wherein ME/I is likely to be upheld.     

The Utilization and Choices of Aneuploidy Screening in a Midwestern Population

The types, interpretation, and use of first- and second-trimester aneuploidy screening are often unclear for many women. This impairs appropriate decision making and understanding of the implications of prenatal genetic testing options. The purpose of this study was to examine the utilization of Stepwise Sequential screening in our Midwestern population, demographic factors associated with choice of screening and method of risk reporting and it’s potential impact on women’s choices. First trimester screening was performed for 2,634 women during the study period. Results were not reported or “framed” as “positive” or “negative”. Rather, the specific age-risk and screen-risk for T21 were relayed, along with options for follow-up Stepwise Sequential screening and invasive testing. Nearly 80 % of women declined Stepwise Sequential screening. Minorities and women of lower education were least likely to pursue further screening. Less than 4 % of the study population elected invasive testing. First trimester screening was associated with a 53 % reduction in amniocenteses and 20 % fewer CVS’s compared to pre-first trimester screening availability. Reporting age-and screen-risks for T21, rather than classifying results as “positive” or “negative” based on a pre-determined threshold, was associated with a low uptake of further testing.     

Parent–Child Synchrony After Early Childhood: A Systematic Review

Clinical Child and Family Psychology Review - Parent–child synchrony, or the coordination of biological and behavioral processes between parent and child, is thought to promote healthy...     

What Makes an Idea Risky? The Relations between Perceptions of Idea Novelty,Usefulness, and Risk

Individuals and organizations frequently tout creative ideas as a desirable goal, and yet, creative ideas are frequently rejected. Creativity researchers have often suggested that creative ideas are rejected because they are perceived as riskier due to their inherent novelty or originality. Although this assumption is prevalent, we are unaware of any empirical research directly examining the relations between perceptions of novelty and risk. We provide an empirical test of this assumption in two studies in which participants rate the novelty, usefulness, and riskiness of ideas. Across both studies, we find consistent support for the idea that usefulness, rather than novelty, has the strongest relation with risk perceptions. We also find some evidence that novelty and usefulness interact to predict perceptions of risk. Additionally, in Study 2, we find that usefulness has the strongest relation with willingness to invest and buy a product. The findings of this study suggest that the bias against creativity may be driven by the perceived usefulness of an idea, rather than its novelty, such that ideas with lower usefulness are perceived to be riskier.     

Wunder’s probability objection

Tyler Andrew Wunder, in his article, “Alvin Plantinga on Paul Draper’s evolutionary atheology: implications of theism’s non-contingency (Wunder in International Journal for the Philosophy of Religion 74: 67–75 2013),” argues that Plantinga makes a serious error regarding probabilities in his critique of Draper. Properly modified, Wunder believes the argument “works,” but only in a trivial sense. This paper argues that Wunder’s objection, based on an assumed probability calculus, is merely asserted; whereas, there are other competing axiomatic systems consistent with Plantinga’s treatment of probability. As to the modified argument, it is demonstrated that Wunder mistakenly concludes that two key propositions are contradictory. The consequence of this is not that Plantinga’s argument “works” in a trivial sense, but rather that the argument becomes incoherent. Lastly, this paper will explore the consequences of both Wunder’s and Plantinga’s assumptions concerning conditional probability for Draper’s evidentiary argument and Plantiga’s Evolutionary Argument Against Naturalism.