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 We also report new data from two unpublished experiments that are consistent with the BISC model, and we discuss the conditions under which purely behavioral sunk-cost effects are likely to be observed.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.     

CONCURRENT RESURGENCE AND BEHAVIORAL HISTORY

The contribution of past experiences to concurrent resurgence was investigated in three experiments. In Experiment 1, resurgence was related to the length of reinforcement history as well as the reinforcement schedule that previously maintained responding. Specifically, more resurgence occurred when key pecks had been reinforced on a variable-interval 1-min schedule than a variable-interval 6-min schedule, but this effect may have been due either to the differential reinforcement rates or differential response rates under the two schedules. When reinforcement rates were similar (Experiment 2), there was more resurgence of high-rate than low-rate responding. When response rates were similar (Experiment 3), resurgence was not related systematically to prior reinforcement rates. Taken together, these three experimental tests of concurrent resurgence illustrate that prior response rates are better predictors of resurgence than are prior reinforcement rates.     

The Quality of Home Environment in Brazil: An Ecological Model

Based on Bronfenbrenner's (1999) ecological perspective, a longitudinal, prospective model of individual differences in the quality of home environment (Home Observation for Measurement of the Environment—HOME) was tested in a sample of 179 Brazilian children and their families. Perinatal measures of family socioeconomic status (SES) and child birth weight had direct effects on HOME at preschool age. As either family SES or child birth weight increased, HOME also increased through diminished emotional distress in the mother a month following childbirth. SES had a negative effect on number of children in the household, which in turn had a long-term negative impact on HOME. Compared to mothers who had reported not to plan their pregnancy, those who did were more likely to have fewer children, to report more spouse support during childbearing, and to show less emotional distress a month after childbirth, all of which also influenced HOME at preschool age. These findings are discussed in light of the broader socio-ecological Brazilian context, with direct implications to clinical practice aimed at improving the quality of home environment.     

Clinical Characterization and Risk Profile of Individuals Seeking Genetic Counseling for Hereditary Breast Cancer in Brazil

Hereditary breast cancer (HBC) accounts for 5–10% of breast cancer cases and it significantly increases the lifetime risk of cancer. Our objective was to evaluate the sociodemographic variables, family history of cancer, breast cancer (BC) screening practices and the risk profile of cancer affected or asymptomatic at-risk women that undergo genetic counseling for hereditary breast cancer in public Brazilian cancer genetics services. Estimated lifetime risk of BC was calculated for asymptomatic women using the Gail and Claus models. The majority of women showed a moderate lifetime risk of developing BC, with an average risk of 19.7% and 19.9% by the Gail and Claus models, respectively. The average prior probability of carrying a BRCA1/2 gene mutation was 16.7% and overall only 32% fulfilled criteria for a hereditary breast cancer syndrome as assessed by family history. We conclude that a significant number of individuals at high-risk for HBC syndromes may not have access to the benefits of cancer genetic counseling in these centers. Contributing factors may include insufficient training of healthcare professionals, disinformation of cancer patients; difficult access to genetic testing and/or resistance in seeking such services. The identification and understanding of these barriers is essential to develop specific strategies to effectively achieve cancer risk reduction in this and other countries were clinical cancer genetics is not yet fully established.     

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.