On the Observability of Purely Behavioral Sunk-Cost Effects: Theoretical and Empirical Support for the BISC Model

There is growing interest in whether and how sunk-cost effects for purely behavioral investments occur. In this article, we further discuss Cunha and Caldieraro's (2009) Behavioral Investment Sunk Cost (BISC) model and reconcile Otto's (2010) results with the BISC model predictions. We also report new data from two unpublished experiments that are consistent with the BISC model, and we discuss the conditions under which purely behavioral sunk-cost effects are likely to be observed.     

Systemic administration of a nitric oxide synthase inhibitor impairs fear sensitization in the plus-maze

The aim of the present study was to evaluate the occurrence of fear sensitization in rats previously treated with an inhibitor of the NO syntheses and submitted to Trial1/Trial2 plus-maze (PM) procedure. Male Wistar rats received a systemic treatment with N(omega)-nitro-L-Arginine-methyl ester (L-NAME; 5, 10 or 50 mg kg(-1)) and were submitted to PM Trial1. In the following day the animals were re-exposed to the PM with no drug administration (Trial2). Some standards spatial-temporal measures, such as the percentage of entries (% Open arm entries) and time spent (% Open arm time) in the open arms and risk assessment frequency were recorded and used to estimate the animal level of fear sensitization in PM Trial2. The results showed that animals receiving L-NAME (50 mg kg(-1)) displayed increased % Open arm entries and % Open arm time in Trial2 in relation to the group receiving 0.9% saline, which is compatible with impaired fear/anxiety acquisition during Trial1/Trial2 PM procedure. In addition, rats treated with L-NAME (50 mg kg(-1)) exhibited low level of risk assessment in Trial2 in relation to the group treated with 0.9% saline, which indicates low level of fear/anxiety during PM re-exposure. The number of entries into the enclosed arms was not changed by any L-NAME treatment, which suggests no bias of the drug treatments on animal locomotor activity. The data suggest that NO synthesis may mediate the fear sensitization process in the PM.     

Would Socio-Economic Inequalities in Depression Fade Away with Income Transfers?

A number of recent studies have questioned the conventional view regarding the existence of income-related inequalities in depression and have suggested that other factors have a more marked impact, most notably those socio-environmental effects linked to professional status and educational attainment. This paper seeks to measure and decompose the degree of socio-economic inequality in the factors underlying reported depression by drawing on data from Spain (Spanish National Health Survey, 2003), a country in which mental care coverage is somewhat limited, but where a marked social transformation has been apparent in recent decades. Contrary to recent evidence, our findings point towards the existence of significant income-related inequalities in the prevalence of reported (diagnosed) depression. However, the results from our decomposition analysis are more mixed. While a modest proportion of overall inequalities (6–13%) is accounted for by income alone, labour status, demographics and education appear to be more relevant. However, when controlling for potential endogeneity between income and depression by using instrumental variables (IV), income is found to account for more than 50% of overall inequality in reported depression.

How writing system and age influence spatial representations of actions: a developmental, cross-linguistic study

Recently, researchers reported a bias for placing agents predominantly on the left side of pictures. Both hemispheric specialization and cultural preferences have been hypothesized to be the origin of this bias. To evaluate these hypotheses, we conducted a study with participants exposed to different reading and writing systems: Germans, who use a left-to-right system, and Israelis, who use a right-to-left system. In addition, we manipulated the degree of exposure to the writing systems by testing preschoolers and adults. Participants heard agent-first or recipient-first sentences and were asked to draw the content of the sentences or to arrange transparencies of protagonists and objects such that their arrangement depicted the sentences. Although preschool-age children in both countries showed no directional bias, adults manifested a bias that was consistent with the writing system of their language. These results support the cultural hypothesis regarding the origin of spatial-representational biases.     

God’s categories: The effect of religiosity on children’s teleological and essentialist beliefs about categories

Creationism implies that God imbued each category with a unique nature and purpose. These implications closely correspond to what some cognitive psychologists define as an essentialistic and teleological stance towards categories. This study assessed to what extent the belief in God as creator of categories is related to the mappings of these stances to categories in different domains. Israeli secular and orthodox Jewish 1st and 5th graders responded to questions assessing these three types of beliefs. The results revealed that secular children did not differ from orthodox children with respect to their essentialist beliefs about the stability of animal category membership, and their teleological construal of artifacts. In turn, secular children did differ from orthodox children with respect to their essentialist beliefs about the stability of social category membership, and their teleological construal of both animal and social categories. These findings intimate that while essentialist beliefs about animals, and teleological beliefs about artifacts do not require cultural input in order to emerge, essentialist beliefs about social categories, and teleological beliefs about both animal and social categories do.     

The development of category learning strategies: What makes the difference?

Category learning can be achieved by identifying common features among category members, distinctive features among non-members, or both. These processes are psychologically and computationally distinct, and may have implications for the acquisition of categories at different hierarchical levels. The present study examines an account of children’s difficulty in acquiring categories at the subordinate level grounded on these distinct comparison processes. Adults and children performed category learning tasks in which they were exposed either to pairs of objects from the same novel category or pairs of objects from different categories. The objects were designed so that for each category learning task, two features determined category membership whereas two other features were task irrelevant. In the learning stage participants compared pairs of objects noted to be either from the same category or from different categories. Object pairs were chosen so that the objective amount of information provided to the participants was identical in the two learning conditions. We found that when presented only with object pairs noted to be from the same category, young children (6 ? YO ? 9.5) learned the novel categories just as well as older children (10 ? YO ? 14) and adults. However, when presented only with object pairs known to be from different categories, unlike older children and adults, young children failed to learn the novel categories. We discuss cognitive and computational factors that may give rise to this comparison bias, as well as its expected outcomes.     

Sunk-cost effects on purely behavioral investments

Although the sunk-cost effect is a well-documented psychological phenomenon in monetary investments, existing literature investigating behavioral investments (e.g., time, effort) has not replicated this effect except when such investments relate to monetary values. The current explanation for this discrepancy proposes that purely behavioral sunk-cost effects are unlikely to be observed because they are difficult to book, track, and balance in a mental account. Conversely, we argue that, through an effort-justification mechanism, people account for the amount of behavioral resources invested when selecting an alternative, in which case they may fall prey to purely behavioral sunk-cost effects. The results of two experiments support this prediction. Because many decisions involve behavioral investments, behavioral sunk-cost effects should be pervasive psychological phenomena.     

How individualism–collectivism orientations predict happiness in a collectivistic context

We discuss how individualistic/collectivistic orientations of employees predict affective well-being at work, and how this relationship is moderated by the perceptions of spirit of camaraderie in organizations. The sample comprises 161 employees of 109 organizations operating in Portugal, a collectivistic culture. The findings suggest that: (a) collectivistic individuals show higher affective well-being than individualists; (b) this relationship is moderated by the employees’ perceptions of the spirit of camaraderie in their organizations; (c) higher affective well being levels tend to be experienced by collectivists who find working in an organizational context to be rich in spirit of camaraderie, and lower levels of affective well being are expressed by individualists who perceive poor spirit of camaraderie in their working environments. The paper emphasizes that employee happiness can have different bases in different cultures and that individualism/collectivism orientations do not operate in the same way in different cultural and organizational contexts. We are very grateful to the three anonymous reviewers for their helpful comments and suggestions.     

Organisational Justice and Citizenship Behaviors: A Study in the Portuguese Cultural Context

Theoretical and empirical evidence suggests that justice and organisational citizenship behaviors (OCB), as well as the relationship between them, are not culture free. However, most studies have been carried out in parts of Asia and Northern Europe, and especially in the USA, shedding little understanding on the dynamics of justice and OCB in less‐studied contexts. We show how four dimensions of organisational justice predict four dimensions of OCB in an under‐studied context—Portugal, a feminine, collectivistic, high power distance and low performance‐oriented culture—a profile that is antipodal to that of US culture. A sample of 269 employees reported their justice perceptions, their OCBs being described by supervisors. The findings suggest that: (a) employees are more sensitive to the interactional dimensions of justice than to the procedural and distributive ones; (b) among the interactional dimensions, the interpersonal one is more predictive of some OCB dimensions than the informational one. Des données théoriques et empiriques suggèrent que la justice et les comportements de citoyenneté organisationnelle (OCB), tout comme la relation entre eux, ne sont pas sans base culturelle. Toutefois, la plupart des études ont été menées dans certaines parties de l’Asie, de l’Europe du Nord, et plus particulièrement aux USA, ce qui restreint la compréhension des dynamiques de la justice et des OCB qui peuvent être appréhendés dans d’autres contextes. Nous montrons comment 4 dimensions de la justice organisationnelle prédisent 4 dimensions des OCB dans un contexte peu étudié—le Portugal, une culture féminine, orientée vers la collectivité, avec une forte distance au pouvoir et de faibles performances—, un profil aux antipodes de la culture américaine. Chacun des 269 employés de l’échantillon indique ses perceptions de la justice, ses OCB ont été décrits par ses supérieurs. Les résultats montrent que (a) les employés sont plus sensibles aux dimensions interactionnelles de la justice qu’à celles procédurales et distributives (b) parmi les dimensions interactionnelles, l’interpersonnelle est plus prédictive de certaines dimensions des OCB plutôt que l’informationnelle.