Children's strategies in computational estimation

We investigated strategies used to estimate answers to addition problems. Two hundred and sixteen participants (72 adults, 72 sixth graders, and 72 fourth graders) had to provide estimates of three-by-three digit addition problems (e.g., 249 + 743). The choice/no-choice method was used to obtain unbiased estimates of the performance characteristics of strategies. Results showed that (a) at all ages, the most common strategy was to round both operands down to the closest smaller decades, (b) strategy use and execution were influenced by participants' age, problem features, and relative strategy performance, and (c) age-related changes in computational estimation include changes in relative strategy use and execution, as well as in the relative influences of problem and strategy characteristics on strategy choices. Implications of these findings for understanding age-related differences in strategic aspects of computational estimation performance are discussed.     

Logical knowledge and ordinary reasoning

This paper argues that the prominent accounts of logical knowledge have the consequence that they conflict with ordinary reasoning. On these accounts knowing a logical principle, for instance, is having a disposition to infer according to it. These accounts in particular conflict with so-called ‘reasoned change in view’, where someone does not infer according to a logical principle but revise their views instead. The paper also outlines a propositional account of logical knowledge which does not conflict with ordinary reasoning.     

The speed of visual recognition memory

Two processes are thought to support visual recognition memory (VRM): Familiarity and recollection. The former is generally considered to be faster. However, the relationship between the precise onset of the two processes is unclear. Here, we use a novel paradigm, the SAB (Speed and Accuracy Boosting procedure) that constrains participants to use their fastest strategy and provides a continuous distribution of their reaction times. We show that fast recognition occurs as early as ~370 ms, a limit that appears incompressible whatever types of stimuli were used. In a second experiment, running the SAB in conjunction with a modified version of the remember/know paradigm, we show that responses up to ~420 ms are based solely on familiarity. These time limits of 370 ms and 420 ms provide strong constraints on the neural mechanisms underlying VRM and suggest that the fastest, familiarity-based, responses could rely on the visual ventral stream only.     

The benefits of autonomy support for adolescents with severe emotional and behavioral problems

The benefits of autonomy support in the domain of education have been well established within the general population, but have yet to be demonstrated within clinical populations. The present study investigated the benefits of an autonomy-supportive interpersonal style on teenage girls’ internalization of a tedious clinical workshop and their subjective experience during this task. Participants were female teenagers placed in a social rehabilitation center for their severe emotional and behavioral problems (n = 29). An experimental design allowed comparing the impact of learning a tedious, but important workshop with or without autonomy support on internalization and experiential outcomes. Results demonstrate that autonomy support leads to higher perceived task’s value, task liking as well as less negative affect compared to a condition without autonomy-support. Participants in the autonomy-supportive condition also perceived the instructor as more competent. By uncovering benefits of autonomy support to a clinical population of adolescents, the present study supports self-determination theory’s tenet that the benefits of autonomy support are universal.     

Songs as an aid for language acquisition

In previous research, Saffran and colleagues [Saffran, J. R., Aslin, R. N., & Newport, E. L. (1996). Statistical learning by 8-month-old infants. Science, 274, 1926-1928; Saffran, J. R., Newport, E. L., & Aslin, R. N. (1996). Word segmentation: The role of distributional cues. Journal of Memory and Language, 35, 606-621.] have shown that adults and infants can use the statistical properties of syllable sequences to extract words from continuous speech. They also showed that a similar learning mechanism operates with musical stimuli [Saffran, J. R., Johnson, R. E. K., Aslin, N., & Newport, E. L. (1999). Abstract Statistical learning of tone sequences by human infants and adults. Cognition, 70, 27-52.]. In this work we combined linguistic and musical information and we compared language learning based on speech sequences to language learning based on sung sequences. We hypothesized that, compared to speech sequences, a consistent mapping of linguistic and musical information would enhance learning. Results confirmed the hypothesis showing a strong learning facilitation of song compared to speech. Most importantly, the present results show that learning a new language, especially in the first learning phase wherein one needs to segment new words, may largely benefit of the motivational and structuring properties of music in song.     

Do allogeneic bone marrow transplant candidates match coping to controllability of pre-treatment stressors?

According to the Person x Situation theoretical framework, people adjust their coping to address the unique challenges of encountered stressors. Whether their strategies fit or appropriately address these stressor challenges influences adjustment. We examined the fit between pre-treatment stressors reported by hematological cancer patients awaiting allogeneic bone marrow transplantation (alloBMT) and their coping responses. Stressors were categorized as controllable versus uncontrollable; coping responses were categorized as problem- versus emotion-focused versus mixed (i.e., elements of both coping types). We hypothesized that patients would employ coping responses that fit the controllability of stressors (i.e., a match between stressor and coping response): problem-focused coping for controllable stressors and emotion-focused coping for uncontrollable stressors. In qualitative interviews, pre-BMT patients (10 men, 7 women) described encountered stressors and how they coped with them. Every reported stressor was linked with its associated coping response, resulting in a stressor-coping pair. We determined the proportion of total stressor-coping pairs in which the coping response matched the controllability of its linked stressor. Most stressor-coping pairs involving uncontrollable stressors showed the hypothesized match with emotion-focused or mixed coping. Contrary to hypotheses, fewer stressor-coping pairs that involved controllable stressors matched with problem-focused or mixed coping. Rather, these pairs were more likely to link controllable stressors with emotion-focused coping (i.e., mismatch between stressor controllability and type of coping). AlloBMT candidates may appraise the pre-treatment stage, globally, as permitting very little control. Coping efforts may consequently emphasize regulation of negative emotions (i.e., emotion-focused coping).     

Multi-family groups in the treatment of young adults with eating disorders

Multi-family group therapy is a variant of family therapy in which members are able to gain insight and learn from each other, provide support and encouragement, alleviate their sense of isolation and improve communication and social functioning. This study describes a series of multi-family groups conducted within the eating disorder service of a large London NHS Hospital. Ratings made by participants indicated that families viewed the treatment favourably.     

Analysis of the creation of 'emptiness', of 'nothingness', in certain types of psychosis

Some psychotic patients manage to create nothingness and emptiness thanks to the amount of work their ego accomplishes. That is the paradox we find in schizophrenic patients, their ego is simultaneously weak and powerful. When we analyse how this nothingness/emptiness is created, we enter into a strange world in which the patient's ego is, in part, defective and fragmented; his or her thinking apparatus, capacity for perceiving and feeling are under attack. Yet this same ego can call on intellectual ability, imagination and tremendous energy in order to create a highly complex structure, thanks to which the psychotic individual manages to create a kind of para-organization of space by splitting 'nothingness' (the space between representations) and 'density' (a compact magma made up of many different highly-condensed representations). Both nothingness and density may give the impression that the patient is 'nowhere to be found' and therefore impossible to analyse. In this paper, I shall describe these mechanisms as they appear in the clinical material of a female psychotic patient.