A multistimulus,portable, and programmable conditioning panel for pigeons

A portable two-response-key conditioning panel for pigeons is described. It can be attached to the subjects’ home cages and allows around-the-clock experimentation. Visual stimuli are presented with light-diode display matrices. Food rewards are dispensed directly onto the stimulus/response keys with separate solenoid dispensers. Several platforms can be simultaneously controlled by a single personal computer with programs written in a simple language adapted for on-line operation. Two experiments exploring the effects of prolonged conditioning sessions upon responding and learning demonstrated the effectiveness of the system. The apparatus is an efficient and inexpensive alternative to a conventional conditioning chamber.     

Influences of task concreteness upon transitive responding in humans

The derivation of the conclusion Anna is bigger than Mary from the premises Anna is bigger than Paul and Mary is smaller than Paul is considered an instance of transitive deduction. For a non-verbal presentation, the premise statements were here transformed into a multiple operant discrimination task. Adult subjects were trained with overlapping pairs of a six-member stimulus series (A+B–, A+C–, C+D–, D+E–, E+F–; +: choice rewarded, choice penalized). A computer game-type presentation that hid the actual problem structure from the subjects was employed. The effects of varying the presentation style of the task on the objective performance and the structure awareness of subjects were investigated. A first experiment used random polygons as stimuli and the relations between them were only signalled by the above reinforcement allocations. In a second experiment the stimuli were cartoon figures additionally involved in a dominance hierarchy that was suggested graphically. A third experiment used named items that were related through visible size differences in addition to the reinforcement allocations but was otherwise like an experiment using an abstract format reported by Werner et al. (1992). In all experiments a similar proportion of subjects responded transitively when subsequently tested with the pairs BD, BE and CE by preferentially choosing stimulus B or C. Each subject subsequently filled in a questionnaire, completed a stimulus ordering exercise, and was interviewed to find out whether they were explicitly aware of the stimulus hierarchy underlying each of the tasks. Although the proportion of subjects revealing an explicit transitive responding increased together with the concreteness of the stimuli and their relations across the experiments, the objective performance in terms of choice accuracy did not vary. The accuracy performance on tests could be accurately simulated with a modification of a simple conditioning model. It is concluded that an implicit mode of processing may underlie many instances of transitive responding in humans even when explicit task understanding is reported.     

Telefonische Nachuntersuchungen bei postpartaler Depression Ein Erfahrungsbericht

Erfahrungen bei telefonischen Befragungen von Müttern mit und ohne postpartal depressiven Symptomen werden berichtet. Die Vor- und Nachteile telefonischer Interviews werden diskutiert. Die ökonomischen und logistischen Vorteile gegenüber Face-to-face-Interviews kommen vor allem bei größeren Entfernungen zum Wohnort zum Tragen. Insbesondere für problemorientierte Fragestellungen (z. B. Depression) scheinen telefonische Interviews eine in der Bevölkerung akzeptierte Alternative zu sein.     

We are the opposite of you! Mirroring of national,regional and ethnic stereotypes

The content of stereotypes can be shaped by multiple mechanisms, one of them possibly being the “mirroring effect.” Mirroring describes a phenomenon whereby people rate their ingroup characteristics as opposite to characteristics typical of a relevant outgroup. The aim of our study was to explore mirroring in three intergroup contexts—in national, regional, and ethnic stereotypes. In Study 1, 2,241 participants rated national ingroup stereotype and outgroup stereotypes of five Central European countries. In Study 2, 741 Czech participants rated regional ingroup and outgroup stereotypes of people living in two distinct parts of the Czech Republic. In Study 3, 463 majority and Hungarian minority participants in Slovakia rated ethnic ingroup and outgroup stereotypes. The results showed a clear presence of mirroring in all three contexts.     

What is it to be aware of your awareness of red? A review essay of Michelle Montague’s The Given

In this review essay of Michelle Montague’s The Given we focus on the central thesis in the book: the awareness of awareness thesis. On that thesis, a state of awareness constitutively involves an awareness of itself. In Section 2, we discuss what the awareness of awareness thesis amounts to, how it contrasts with the transparency of experience, and how it might be motivated. In Section 3, we discuss one of Montague’s two theoretical arguments for the awareness of awareness thesis. A view that accepts the awareness of awareness thesis, Montague argues, is to be preferred over competing views because it outperforms them in accounting for the property attributions one makes in perceptual experience. We suggest that it is not clear that this argument for the awareness of awareness thesis is successful. Finally, in Section 4 we consider the relation between Montague’s view of color experience and what she calls Strawson’s datum, arguing that Montague may not be able to explain this datum as straightforwardly as she supposes. This, we suggest, threatens Montague’s second theoretical argument for the awareness of awareness thesis.     

What Do Parents of Children with Down Syndrome Think about Non-Invasive Prenatal Testing (NIPT)?

This study explores the attitudes of parents of children with Down syndrome towards non-invasive prenatal testing (NIPT) and widening the scope of prenatal screening. Three focus groups (n = 16) and eleven individual interviews with Dutch parents (and two relatives) of children with Down syndrome were conducted. Safety, accuracy and earlier testing were seen as the advantages of NIPT. Some participants were critical about the practice of screening for Down syndrome, but acknowledged that NIPT enables people to know whether the fetus is affected and to prepare without risking miscarriage. Many feared uncritical use of NIPT and more abortions for Down syndrome. Concerns included the consequences for the acceptance of and facilities for children with Down syndrome, resulting in more people deciding to screen. Participants stressed the importance of good counseling and balanced, accurate information about Down syndrome. Testing for more disorders might divert the focus away from Down syndrome, but participants worried about “where to draw the line”. They also feared a loss of diversity in society. Findings show that, while parents acknowledge that NIPT offers a better and safer option to know whether the fetus is affected, they also have concerns about NIPT’s impact on the acceptance and care of children with Down syndrome.     

Experiential tourist shopping value: Adding causality to value dimensions and testing their subjectivity

Previous literature on consumer behavior has tackled the experiential approach in retailing services in depth; however, most of the previous studies have concentrated on the simultaneous but not concatenated effects of value dimensions on satisfaction and/or loyalty. Furthermore, tourists' shopping behavior remains an underdeveloped area of study from the experiential perspective. This work explores experiential tourist shopping value, aiming to (a) explain tourists' loyalty to retailers by adding causality to experiential dimensions and (b) prove the subjectivity of these values. After a diachronic and synchronic review of the literature on experiential shopping value, a structural model with a chain of effects consisting of product quality, service quality, self‐esteem and shopping enjoyment on loyalty, and a multidimensional index as a second‐order model were built with partial least squares and tested on a purposive sample of 374 tourists in Valencia (Spain). Our findings revealed a sequential approach to tourists' shopping experiences where utilitarian values led to social and hedonic ones, all of which were antecedents of loyalty to retailers. Furthermore, the index showed differences by gender and nationality. Although our results are context specific, they add to the value creation process as they show a sequence of effects, and a fully subjective value provision, which changes according to demographics. The originality of this work is that it contributes to the suitability of the experiential paradigm in explaining tourists' shopping behavior by promoting interest in this specific, underdeveloped target area, and also by adding causality and proving the subjectivity of experiential value dimensions.     

A one-trial inhibitory avoidance task to zebrafish: Rapid acquisition of an NMDA-dependent long-term memory

The behavioral tasks aiming to evaluate learning and memory mechanisms currently available to zebrafish (Danio rerio) involve long training sessions frequently along multiple days and are based on shuttle box or active-avoidance protocols, preventing a detailed analysis of cellular and molecular time-dependent processes involved in memory acquisition and consolidation. In order to explore zebrafish’s potential contribution to the characterization of the molecular machinery underlying learning and memory rapidly acquired and reliable paradigms are necessary. In this study we present a rapid and effective learning protocol in a single-trial inhibitory avoidance in zebrafish. In a simple apparatus, adult animals learned to refrain from swimming from a white into a dark compartment in order to avoid an electric shock during a single-trial training session that lasted less than 2 min. The resulting memory is robust, long-lasting and sensitive to NMDA-receptor antagonist MK-801 given in the tank water immediately after training. Experiments aiming to further characterize the events underlying memory formation, retrieval or extinction or those looking for cognitive profiling of mutants, neurotoxicological studies and disease models may benefit from this task, and together with complementary strategies available for zebrafish may significantly improve our current knowledge on learning and memory mechanisms.     

Dispositional resistance to change: measurement equivalence and the link to personal values across 17 nations

The concept of dispositional resistance to change has been introduced in a series of exploratory and confirmatory analyses through which the validity of the Resistance to Change (RTC) Scale has been established (S. Oreg, 2003). However, the vast majority of participants with whom the scale was validated were from the United States. The purpose of the present work was to examine the meaningfulness of the construct and the validity of the scale across nations. Measurement equivalence analyses of data from 17 countries, representing 13 languages and 4 continents, confirmed the cross-national validity of the scale. Equivalent patterns of relationships between personal values and RTC across samples extend the nomological net of the construct and provide further evidence that dispositional resistance to change holds equivalent meanings across nations.