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71.
72.
Some researchers have recently argued that humans may be unusual among primates in preferring to use landmark information when reasoning about some kinds of spatial problems. Some have explained this phenomenon by positing that our species’ tendency to prefer landmarks stems from a human-unique trait: language. Here, we test this hypothesis—that preferring to use landmarks to solve such tasks is related to language ability—by exploring landmark use in a spatial task in one non-human primate, the brown capuchin monkey (Cebus apella). We presented our subjects with the rotational displacement task, in which subjects attempt to relocate a reward hidden within an array of hiding locations which are subsequently rotated to a new position. Over several experiments, we varied the availability and the salience of a landmark cue within the array. Specifically, we varied (1) visual access to the array during rotation, (2) the type of landmark, (3) the consistency of the landmark qualities, and (4) the amount of exposure to the landmark. Across Experiments 1 through 4, capuchins did not successfully use landmarks cues, suggesting that non-linguistic primates may not spontaneously use landmarks to solve some spatial problems, as in this case of a small-scale dynamic spatial task. Importantly, we also observed that capuchins demonstrated some capacity to learn to use landmarks in Experiment 4, suggesting that non-linguistic creatures may be able to use some landmarks cues in similar spatial tasks with extensive training. 相似文献
73.
In the current study, we examined the dimensionality of the 16-item Card Sorting subtest of the Delis-Kaplan Executive Functioning System assessment in a sample of 264 native English-speaking children between the ages of 9 and 15 years. We also tested for measurement invariance for these items across age and gender groups using item response theory (IRT). Results of the exploratory factor analysis indicated that a two-factor model that distinguished between verbal and perceptual items provided the best fit to the data. Although the items demonstrated measurement invariance across age groups, measurement invariance was violated for gender groups, with two items demonstrating differential item functioning for males and females. Multigroup analysis using all 16 items indicated that the items were more effective for individuals whose IRT scale scores were relatively high. A single-group explanatory IRT model using 14 non-differential item functioning items showed that for perceptual ability, females scored higher than males and that scores increased with age for both males and females; for verbal ability, the observed increase in scores across age differed for males and females. The implications of these findings are discussed. 相似文献
74.
The asymmetric dominance effect (ADE) occurs when the introduction of a partially dominated decoy option increases the choice share of its dominating alternative. The ADE is a violation of regularity and the constant-ratio rule, which are two derivations of the independence of irrelevant alternatives axiom, a core tenant of rational choice. The ADE is one of the most widely reported human choice phenomena, leading researchers to probe its origins by studying a variety of non-human species. We examined the ADE in brown capuchin monkeys (Cebus apella), a species that displays many other decision biases. In Experiment 1, we used a touchscreen method to elicit choice-based preferences for food rewards in asymmetrically dominated choice sets. In Experiments 2 and 3, we distinguished between different types of judgments and used a free selection task to elicit consumption-based preferences for juice rewards. However, we found no evidence for the ADE through violations of regularity or the constant-ratio rule, despite the similarity of our stimuli to other human and non-human experiments. While these results appear to conflict with existing literature on the ADE in non-human species, we point out methodological differences—notably, the distinction between value-based and perception-based stimuli—that have led to a collection of phenomena that are difficult to understand under a unitary theoretical framework. In particular, we highlight key differences between the human and non-human research and provide a series of steps that researchers could take to better understand the ADE. 相似文献
75.
Can Kabadayi Anastasia Krasheninnikova Laurie O’Neill Joost van de Weijer Mathias Osvath Auguste M. P. von Bayern 《Animal cognition》2017,20(6):1137-1146
The ability to inhibit unproductive motor responses triggered by salient stimuli is a fundamental inhibitory skill. Such motor self-regulation is thought to underlie more complex cognitive mechanisms, like self-control. Recently, a large-scale study, comparing 36 species, found that absolute brain size best predicted competence in motor inhibition, with great apes as the best performers. This was challenged when three Corvus species (corvids) were found to parallel great apes despite having much smaller absolute brain sizes. However, new analyses suggest that it is the number of pallial neurons, and not absolute brain size per se, that correlates with levels of motor inhibition. Both studies used the cylinder task, a detour-reaching test where food is presented behind a transparent barrier. We tested four species from the order Psittaciformes (parrots) on this task. Like corvids, many parrots have relatively large brains, high numbers of pallial neurons, and solve challenging cognitive tasks. Nonetheless, parrots performed markedly worse than the Corvus species in the cylinder task and exhibited strong learning effects in performance and response times. Our results suggest either that parrots are poor at controlling their motor impulses, and hence that pallial neuronal numbers do not always correlate with such skills, or that the widely used cylinder task may not be a good measure of motor inhibition. 相似文献
76.
Robert A. Neimeyer Laurie A. Burke 《Journal of Rational-Emotive & Cognitive-Behavior Therapy》2017,35(1):38-59
One key focus of a meaning reconstruction model of bereavement concerns spiritual meanings attributed to the death, whether consoling or troubling. Specifically, previous studies in our research program suggest that religiously inclined violent death survivors are at risk for elevated levels of both bereavement distress and complicated spiritual grief, a crisis of faith following loss that refers to the erosion of the mourner’s relationship to God and/or the religious community. However, more research is needed to understand the convergence of depression and spiritual struggle in the context of violent and natural loss. In this study of a diverse sample of 59 American Christians bereaved less than 5 years, we sought to: (1) determine if individuals bereaved by homicide, suicide or fatal accident differed from those bereaved by natural causes in their levels of depression and spiritual coping; (2) investigate the relation between the latter constructs; and (3) ascertain if cause of death mediates the effect of religious coping on depression. We found that: (a) violently bereaved individuals endorsed more negative religious coping, and (b) depression was associated with greater spiritual struggle, particularly a sense of disrupted relationship with God. Contrary to expectations, positive religious coping was unrelated to post-loss depression, and cause of death did not mediate the relationship between spiritual coping and depressive symptomatology. A clinical case study concludes the article, illustrating the interweaving of spiritual and psychological distress in tragic bereavement, and their implications for a meaning-oriented grief therapy. 相似文献
77.
Isabelle Roskam Elise Brassart Marine Houssa Laurie Loop Bénédicte Mouton Alexandra Volckaert Nathalie Nader-Grosbois Marie-Pascale Noël Marie-Anne Schelstraete 《Journal of child and family studies》2017,26(2):482-496
Research has tried to identify risk factors that increase the likelihood of difficulties with externalizing behavior. The relations between individual or environmental factors and externalizing behavior have been especially documented. Child-oriented and parent-oriented interventions have been designed in order to decrease externalizing behavior in preschoolers. To date, however, research has largely been compartmentalized. It is therefore not known whether child-oriented or parent-oriented intervention is more effective in reducing externalizing behavior. The aim of the current study was to answer this question by comparing two 8-week child with two 8-week parent-oriented group programs sharing a common experimental design. This was done in a pseudo-randomized trial conducted with 73 3–6-year-old children displaying clinically relevant levels of externalizing behavior who were assigned to one of the four interventions and 20 control participants who were allocated to a waiting list. The results indicate that the four programs focusing on a specific target variable, i.e., social cognition, inhibition, parental self-efficacy beliefs, or parental verbal responsiveness, are all effective in reducing externalizing behavior among preschoolers. Their effectiveness was moderated neither by their orientation toward the child or the parent nor by their content, suggesting that several effective solutions exist to improve behavioral adaptation in preschoolers. A second important highlight of this study is that, thanks to comparable effect sizes, brief focused programs appear to be a reasonable alternative to long multimodal programs, and may be more cost-effective for children and their families. 相似文献
78.
The purpose of this study was to separate the effects of gender from those of desired weight loss on body satisfaction and
eating disordered behavior. Therefore, we explored gender differences in a sample (N = 191) of men and women who wanted to lose weight. We expected that controlling for desire to lose weight would minimize
gender differences; this was supported for (a) overall body dissatisfaction, and (b) degree of concern about, effect of, and
importance of weight and appearance. Nevertheless, women reported (a) less satisfaction with several body parts, (b) stronger
relations between body satisfaction and self-esteem, and (c) use of more weight-loss strategies. Exploratory analyses also
were conducted to examine within-group differences among men. Implications are discussed. 相似文献
79.
80.
Velma M. Murry Beth A. Kotchick Scyatta Wallace Bethany Ketchen Kenya Eddings Laurie Heller Ida Collier 《Journal of child and family studies》2004,13(1):81-99
We present an overview of research on African American families and emphasize in this discussion limitations of approaches used in the past to study African American families. We also discuss and identify challenges for designing and implementing community, family-based programs targeting competence-promoting behaviors in African American families. In addition, we attempt to accomplish the following objectives: (1) identify themes in studies of African American families, including bias in prior research; (2) discuss ways in which prior approaches and conceptual models guiding studies of African Americans have created challenges for the development and implementation of community-based intervention and research programs; and (3) present the Parents Matter! Program as an example of a community-based prevention effort that attempted to overcome many of the challenges created by prior research efforts. 相似文献