Influence of typical size of objects in a categorization task]

This study explores the influence of typical size during a categorization task. The specificity of this experimental work is based on the homogeneity of the graphic stimuli size. We have created a typical size standard of our stimuli, that concerns the real size of the objects represented by the drawings of homogeneous sizes. Then, a priming experiment was performed in which the prime and target drawings had two types of relations: a typical size, and a categorial. The participants are na?ve as to the typical size relation between prime and target. The results show a positive priming effect of the typical size but not of the category. The results are discussed in term of theoretical approach developed by Barsalou and his colleagues (1999, 2003). In this theoretical framework, the typical size can be considered as a perceptual knowledge. In that way, we propose that participants could automatically simulate the typical size as soon as they perceived the drawings of objects with homegenous sizes.     

Enrollment in an Established System of Care: A Replication and Extension of Clinical Profiles at Service Intake

We replicated Rosenblatt et al.'s (1998) cluster analysis of intake profiles of youth enrolled in a system of care program. The characteristics of a unique sample of 275 children and adolescents with emotional and behavioral disorders (E/BD) who participated in the Santa Barbara County Multiagency Integrated System of Care (MISC) program were examined. A two-step clustering procedure (hierarchical and K-means) was used to evaluate subtypes of youth who were opened to MISC after it had become a stable youth-service program. The results of the Rosenblatt et al. (1998) study were replicated with four identical clusters emerging: Troubled, Troubled and Troubling, Troubling, and At-Risk. Two additional clusters were differentiated: Moderate Troubled, and Moderate Troubled and Troubling. Comparisons across these six clusters show distinct profiles of youth with E/BD. Implications of these findings for developing appropriate service plans and for evaluating systems of care outcomes are discussed.     

On the Reality of Illusory Conjunctions

The reality of illusory conjunctions in perception has been sometimes questioned, arguing that they can be explained by other mechanisms. Most relevant experiments are based on migrations along the space dimension. But the low rate of illusory conjunctions along space can easily hide them among other types of errors. As migrations over time are a more frequent phenomenon, illusory conjunctions can be disentangled from other errors. We report an experiment in which series of colored letters were presented in several spatial locations, allowing for migrations over both space and time. The distribution of frequencies were fit by several multinomial tree models based on alternative hypothesis about illusory conjunctions and the potential sources of free-floating features. The best-fit model acknowledges that most illusory conjunctions are migrations in the time domain. Migrations in space are probably present, but the rate is very low. Other conjunction errors, as those produced by guessing or miscategorizations of the to-be-reported feature, are also present in the experiment. The main conclusion is that illusory conjunctions do exist.     

Contested terms and philosophical debates

There are two standard theoretical responses to putative errors in ordinary thinking about some given target property: eliminativism or revisionism. Roughly, eliminativism is the denial that the target property exists, and revisionism is the view that the property exists, but that people tend to have false beliefs about it. Recently, Shaun Nichols has proposed a third option: discretionism. Discretionism is the idea that some terms have multiple reference conventions, so that it may be true to say with eliminativists that the property does not exist, and true to say with revisionists (and others) that the property does exist. This article explores the viability of discretionism, and argues that it faces serious difficulties. Even if the difficulties faced by discretionism can be overcome, it is unclear that discretionism secures anything beyond what is already available to standard revisionist views. The article concludes with some reflections about Nichols’ account of the bare retributive norm.     

“Leaving the Faith of Our Fathers”: Intergenerational Persistence and Class Cleavage of Evangelicals in Chile

Several studies have consistently linked the Evangelical breakdown in Latin America as a mass movement mainly adopted by impoverished working class individuals. However, little is known about how religious inheritance and recruitment of Evangelical movements is affected when status conditions improve along individuals trajectories. Using Bicentenario Survey from 2006 to 2010 we analyze how intergenerational patterns of religious persistence in Chile relate to individuals’ educational attainment and intergenerational mobility. Two mechanisms are evaluated: first, the intergenerational persistence of Evangelicals compared to Catholics and “None’s”; and second, the probability of conversion or reaffiliation to Evangelical Protestantism. Multinomial regression analysis shows that the greater an individual’s educational credentials and upward mobility, the lesser their identification with Evangelical movements, regardless of their religious affiliation or educational attainment of origin. This evidence suggests there are obstacles for Evangelical movements’ vertical mobility, which could be related to Chile’s strong social cleavage in terms of religion.     

Cooperative problem solving in giant otters (<Emphasis Type="Italic">Pteronura brasiliensis</Emphasis>) and Asian small-clawed otters (<Emphasis Type="Italic">Aonyx cinerea</Emphasis>)

Cooperative problem solving has gained a lot of attention over the past two decades, but the range of species studied is still small. This limits the possibility of understanding the evolution of the socio-cognitive underpinnings of cooperation. Lutrinae show significant variations in socio-ecology, but their cognitive abilities are not well studied. In the first experimental study of otter social cognition, we presented two species—giant otters and Asian small-clawed otters—with a cooperative problem-solving task. The loose string task requires two individuals to simultaneously pull on either end of a rope in order to access food. This task has been used with a larger number of species (for the most part primates and birds) and thus allows for wider cross-species comparison. We found no differences in performance between species. Both giant otters and Asian small-clawed otters were able to solve the task successfully when the coordination requirements were minimal. However, when the temporal coordination demands were increased, performance decreased either due to a lack of understanding of the role of a partner or due to difficulty inhibiting action. In conclusion, two species of otters show some ability to cooperate, quite similar to most other species presented with the same task. However, to draw further conclusions and more nuanced comparisons between the two otter species, further studies with varied methodologies will be necessary.     

Testing the indifferentiation hypothesis during childhood, adolescence, and adulthood

The general (g) factor is the most general and relevant cognitive ability. This factor is considered to be one of the most important predictors of academic achievement and of many other socially relevant behavioral outcomes. In the last decades, many researchers have investigated the possible changes in the relevance of the g factor from childhood to adulthood. The indifferentiation hypothesis states that the variance attributed to the g factor and the main cognitive abilities will not change over the life span. In the present study, the authors tested that hypothesis in childhood, adolescence, and adulthood by using 2 different cognitive batteries (Test of Educational Ability [TEA; S. A. TEA, 1999], Wechsler Adult Intelligence Scales [WAIS; D. Wechsler, 1955]), which they administered in 2 different countries--Spain (TEA) and the United States (WAIS). The ages of the participants (N = 2,384) ranged from 8 to 54 years. Results showed that the number of factors extracted and the relevance were the same for every age group in both batteries, as predicted by the indifferentiation hypothesis. The authors discuss implications of intelligence assessment.     

The perception of visually presented yaw and pitch turns: assessing the contribution of motion, static, and cognitive cues

Terrestrial gravity restricts human locomotion to surfaces in which turns involve rotationsaround the body axis. Because observers are usually upright, one might expect the effects of gravity to induce differences in the processing of vertical versus horizontal turns. Subjects observed visual scenes of bending tunnels, either statically or dynamically, as if they were moving passively through the visual scene and were then asked to reproduce the turn deviation of the tunnel with a trackball. In order to disentangle inertia-related (earth-centered) from vision-related (body-centered) factors, the subjects were either upright or lying on their right side during the observations. Furthermore, the availability of continuous optic flow, geometrical cues, and eye movement were manipulated in three experiments. The results allowed us to characterize the factors' contributions as follows. Forward turns (pitch down) with all cues were largely overestimated, as compared with backward turns (pitch up). First, eye movements known to be irregular for vertical stimulation were largely responsible for this asymmetry. Second, geometry-based estimations are, to some extent, asymmetrical. Third, a cognitive effect corresponding to the evaluation of navigability for upward and downward turns was found (i.e.,top-down influences, such as the fear of falling often reported), which tended to increase the estimation of turns in the direction of gravity.     

Strategic influence on the time course of predictive inferences in reading

In the present study, we investigated how reading strategies affect the time course of online predictive inferences. Participants read sentences under instructions either to anticipate the outcomes of described events or to understand the sentences. These were followed by a target word to be named, with stimulus onset asynchronies (SOAs) of 500 or 1,000 msec (50- or 550-msec interstimulus interval, respectively). Sentences either were predictive of events or were lexically matched control sentences. There was facilitation in naming latencies for predictable target words in the strategic-anticipation condition at both SOAs, but not in the read-to-understand condition, with a significant improvement in the former condition in comparison with the latter. This suggests that predictive inferences, which are typically considered to be resource demanding, can be speeded up by specific goals in reading. Moreover, this can occur at no cost to comprehension of explicit information, as was revealed by a comprehension test.