A social decision scheme approach on group size,task difficulty and ability level

Tested several social decision models—or problem-solving models—on groups of different sizes working on a disjunctive task, that is, anagrams of two levels of difficulty. The subjects were 300 ten- and eleven-year-old Swedish boys and girls from Grades 4 and 5, a 2 × 5 × 2 (ability levels high and low × group sizes 1, 2, 3, 4, and 5 × task difficulties hard and easy) design was used. Support was found for the truth-wins model as an explanation of the underlying processes in very small groups (2 and 3), while reasonable explanations for larger groups (4 and 5) were given by the truth-supported wins and the majority if correct, equiprobability otherwise model. Slightly different group processes were inferred on the hard as compared to the easy tasks. The results also extend previous research on the generality of the models, especially the truth-wins model.     

Opposing effects of phonological similarity on item and order memory of words and nonwords in the serial recall task

This study shows that the classical phonological similarity effect (PSE) in immediate serial recall is critically affected by the lexicality of list items, the type of phonological similarity involved, and the scoring procedure. PSE was present in the serial recall score when phonologically distinct words were compared to words that share the middle vowel and end consonant (rhyming lists). PSE was absent in the serial recall score when phonologically distinct words were compared to words that share the initial and final consonants (consonant frame lists). There was a reversal of PSE in serial recall of nonwords when comparing distinct lists to both types of similar lists. Recall accuracy on the other hand was higher for distinct lists regardless of lexicality. Item errors dominated in relation to order errors in the case of nonwords, whereas order errors dominated in relation to item errors in the case of words. Furthermore, order errors were more common for phonologically similar lists, whereas item errors were more common for phonologically distinct lists. This may be the result of intra-list and inter-list interference, respectively. The dominance of the former error type may cause a classical PSE, whereas the dominance of the latter error type may cause a reversal of PSE. Finally, an item identification task yielded no evidence of an association between intra-list interference and discriminability of items in a list.     

Time perception during a two-week confinement: Influence of age,sex, IQ,and time of day

Thirty men, women, and children were confined to an experimental chamber (simulated fallout shelter) for 304.6 hours with no mechanical means of determining passage of time. Extrinsic cues (e.g., night and day) to time of day were absent or unknown. Indicidual estimates of the time of day were made twice daily to determine the relative influence of age, sex, IQ, time of day and days of confinement upon time perception. Estimate deviations in minutes from true time were evaluated by mixed analyses of variance and trend tests. Results revealed significant time of day, age, and days effects. Sex, and IQ effects were not significant.     

The hippocampus facilitates integration within a symbolic field

This paper attempts to elaborate a fundamental brain mechanism involved in the creation and maintenance of symbolic fields of thought. It will integrate theories of psychic spaces as explored by Donald Winnicott and Wilfred Bion with the neuroscientific examinations of those with bilateral hippocampal injury to show how evidence from both disciplines sheds important light on this aspect of mind. Possibly originating as a way of maintaining an oriented, first person psychic map, this capacity allows individuals a dynamic narrative access to a realm of layered elements and their connections. If the proposed hypothesis is correct, the hippocampus facilitates the integration of this symbolic field of mind, where narrative forms of thinking, creativity, memory, and dreaming are intertwined. Without the hippocampus, there is an inability to engage many typical forms of thought itself. Also, noting the ways these individuals are not impaired supports theories about other faculties of mind, providing insight into their possible roles within human thought. The evidence of different systems working in conjunction with the symbolic field provides tantalizing clues about these fundamental mechanisms of brain and mind that are normally seamlessly integrated, and hints at future areas of clinical and laboratory research, both within neuroscience and psychoanalysis.     

Consciousness and modality: on the possible preserved visual consciousness in blindsight subjects

In a recent paper, Brogaard (2011) presents counter-arguments to the conclusions of an experiment with blindsight subject GR. She argues that contrary to the apparent findings that GR’s preserved visual abilities relate to degraded visual experiences, she is in fact fully unconscious of the stimuli she correctly identifies. In this paper, we present arguments and evidence why Brogaard’s argument does not succeed in its purpose. We suggest that not only is relevant empirical evidence in opposition to Brogaard’s argument, her argument misconstrues necessary criteria to decide whether a conscious experience is visual or not visual.     

Trying and the Arguments from Total Failure

New Volitionalism is a name for certain widespread conception of the nature of intentional action. Some of the standard arguments for New Volitionalism, the so-called arguments from total failure, have even acquired the status of basic assumptions for many other kinds of philosophers. It is therefore of singular interest to investigate some of the most important arguments from total failure. This is what I propose to do in this paper. My aim is not be to demonstrate that these arguments are inconsistent or that total failure and naked tryings are metaphysically impossible. Rather, my aim is be to build a case against the possibility of naked, independently existing tryings, by questioning how well we understand the scenarios invoked in their favour. Thus, rather than attempting to present a definitive metaphysical refutation of New Volitionalism, I attempt to diminish or demolish its underlying motivation.

Reconstructing N: A New Approach to Measuring Emotional Sensitivity

Neuroticism (N) assesses emotional sensitivity or lability, but the construct is poorly defined and instruments used to assess N are marred by a number of psychometric shortcomings. Neuroticism is also described in an overtly pejorative way, with items keyed for themes reflecting low self-esteem, anxiety, and depression. The present paper presents a revised model based on a new questionnaire entitled the Emotional Sensitivity Scale (ESS). Using an innovative scenario technique to generate items, exploratory factor analysis of the responses of 242 participants yielded orthogonal dimensions for positive (other-oriented) and negative (self-centered) emotional sensitivity, and the structure was confirmed using confirmatory factor analysis. Validation studies showed that the ESS dimensions were related in systematic ways to related psychometric instruments and that, as predicted, participants scoring high on the positive dimension were better able to recognize displayed emotions. The new scale offers a basis for extending the research on emotional sensitivity using empirically discriminable positive and negative components.     

Suppression of mouse killing and apomorphine-induced social aggression in rats by local anesthesia of the mystacial vibrissae.

Local anesthesia of the facial epidermis can effect a substantial decrease in shock-elicited fighting of paired rats. The present experiments constitute methodological extensions to mouse killing and spontaneous drug-induced social aggression. In the first experiment, known mouse-killing rats were given bilateral lidocaine or placebo injections administered under ether anesthesia. Attack and kill latencies were significantly longer under lidocaine than under placebo; all subjects killed under placebo, whereas a third of all subjects failed to kill on the initial lidocaine test. On subsequent lidocaine testing, latencies decreased and nonkilling rats killed. In a second experiment intense apomorphine-induced conspecific fighting of rats preselected for aggressiveness was markedly reduced following lidocaine anesthesia. The comparative results of both experiments are interpreted in reference to theoretical assertions regarding the import of sensory information in stimulus-bound attack and the typology of central aggression systems.