Monitoring and control in multitasking

Psychonomic Bulletin & Review - The idea that conflict detection triggers control adjustments has been considered a basic principle of cognitive control. So far, this “conflict-control...     

Individual differences in attentional capability are linked to creative decision making

There is a link between visual attention and creativity concerning the generation of rare and flexible decisions/solutions. However, the relationship between individual differences in attentional capability and creative decision making has not yet been investigated in detail. The current study scrutinized this link in a sport‐specific divergent thinking task including videos of real game situations and compared performances between football players being divided into two different expertise levels (expert and amateur football players). We conducted a multiple linear regression analysis to assess whether attentional capability along the attentional focus’ meridians (horizontal, vertical, diagonal) and participants’ expertise level predict creative decision making. The attentional capability along the horizontal meridian of participants’ attentional focus and participants’ expertise level emerged as positive predictors. The findings provide evidence of a relationship between football players’ spatial distribution of attention that match the demands of their sport and an expertise advantage in sport‐specific creative decision making. Implications are not only important for sports, but also for all areas in which spatial attention is required in order to generate unusual solutions.     

Visual motion disambiguation by a subliminal sound

There is growing interest in the effect of sound on visual motion perception. One model involves the illusion created when two identical objects moving towards each other on a two-dimensional visual display can be seen to either bounce off or stream through each other. Previous studies show that the large bias normally seen toward the streaming percept can be modulated by the presentation of an auditory event at the moment of coincidence. However, no reports to date provide sufficient evidence to indicate whether the sound bounce-inducing effect is due to a perceptual binding process or merely to an explicit inference resulting from the transient auditory stimulus resembling a physical collision of two objects. In the present study, we used a novel experimental design in which a subliminal sound was presented either 150 ms before, at, or 150 ms after the moment of coincidence of two disks moving towards each other. The results showed that there was an increased perception of bouncing (rather than streaming) when the subliminal sound was presented at or 150 ms after the moment of coincidence compared to when no sound was presented. These findings provide the first empirical demonstration that activation of the human auditory system without reaching consciousness affects the perception of an ambiguous visual motion display.     

Brief functional anlaysis and treatment of elopement in preschoolers with autism

As a result of the impact of functional analysis methodologies in identifying maintaining variables of problem behavior, considerable research has been devoted to tailoring the methodologies to be practical for an outpatient setting. The purpose of this study was (a) to use brief functional analysis (BFA) methodologies to empirically demonstrate the function of elopement exhibited by two preschoolers diagnosed with autism and (b) to develop function‐based interventions derived from the results of the BFA. In phase one, a BFA consisting of 5‐min sessions with multiple repetitions of each condition was conducted with each participant. In phase two, the efficacy of function‐based interventions was assessed using a pairwise design. Both participants' rates of elopement were differentially lower during the implementation of the function‐based intervention relative to baseline. Collectively, these results demonstrated that brief functional methodologies could be applied successfully to the assessment and treatment of elopement. Moreover, the application of BFA and the ensuing treatment in an outpatient setting extend the existing research on functional analysis. Copyright © 2008 John Wiley & Sons, Ltd.     

Allergic to People: Building Bridges in a Ripped Psychic-Soma

An exploration of the use mind/body metaphors in a woman whose physical, environmental and psychoneurotic trauma culminated in an irreversible colostomy. She lived in a world of concrete symbols, her primary process damaged such that she could not create generative symbols to process her trauma. She regressed to a state of infantile megalomania, recoiling from the external reality of subjective others. Her introjective disorder mirrored her digestive disorder as she could absorb neither good objects nor good nutrients. The analytic situation has been an auxiliary fecal container and we work to bridge her mind body split with mind/body metaphors. As she reclaims lost development mastery, she displays a symbolized sphincter. As her capacity to form symbols grows, she rages and mourns for the loss of her fantasized ideal parents and her ideal body.     

Coordination of complex bimanual multijoint movements under increasing cycling frequencies: The prevalence of mirror-image and translational symmetry

The present study examined the principles underlying inter and intralimb coordination constraints during performance of bimanual elbow–wrist movements at different cycling frequencies (from 0.75 Hz to 2.50 Hz). Participants performed eight coordination tasks that consisted of a combination of in-phase (IN) and/or anti-phase (AN) coordination modes between both elbows and wrists (interlimb), with isodirectional (Iso) or non-isodirectional (NonI) coordination modes within each limb (intralimb). As expected, the principle of muscle homology (in-phase coordination), giving rise to mirror symmetrical movements with respect to the mid-sagittal plane, had a powerful influence on the quality of global coordinative behavior both between and within limbs. When this principle was violated (i.e., when the anti-phase mode was introduced in one or both joint pairs), the non-isodirectional intralimb mode exhibited a (de)stabilizing role in coordination, which became more pronounced at higher cycling frequencies. However, pattern loss with increasing cycling frequency resulted not only in convergence toward the more stable in-phase patterns with the elbows and wrists but also to the anti-phase patterns (which were associated with directional compatibility of within-limb motions). Moreover, participants generally preserved their initial mode of coordination (either in-phase or anti-phase) in the proximal joints (i.e., elbows) while shifting from anti-phase to in-phase (or vice versa) with their distal joint pair (i.e., wrists). Taken together, these findings reflect the impact of two immanent types of symmetry in bimanual coordination: mirror-image and translational symmetry.     

Visual and tactile action effects determine bimanual coordination performance

Effect-based models of motor control assign a crucial role to anticipated perceptual feedback in action planning. Two experiments were conducted to test the validity of this proposal for discrete bimanual key press responses. The results revealed that the normally observed performance advantage for the preparation of two responses with homologous rather than non-homologous fingers becomes inverted when homologous fingers produce non-identical visual effects, and non-homologous fingers produce identical visual effects. In the second experiment the finger homology effect was strongly reduced when homologous fingers produced non-identical tactile feedback. The results show that representations of to-be-produced visual and tactile action effects both contribute to action planning, though possibly to a varying degree. Implications of these results for effect-based models of motor control are considered.     

Imagination equally influences false memories of high and low plausibility events

To examine the effects of event plausibility on people's false beliefs and memories for imagined childhood events, subjects took part in a three‐stage procedure. First, subjects rated how confident they were that they had experienced certain childhood events. They also rated their memories of the events. Second, 1 week later, subjects imagined one high, one moderate and one low plausibility event. Third, 1 week later (and 2 weeks after their initial ratings), subjects rated their confidence and memory a second time. Imagining the events made subjects more confident that they were genuine experiences and gave subjects clearer and more complete memories. Plausibility did not affect subjects' confidence but it did affect their memories. Subjects developed clearer and more complete memories for high, followed by moderate, followed by low plausibility events regardless of whether those events were imagined. We use a nested model of plausibility, belief and memory to discuss our findings. Copyright © 2008 John Wiley & Sons, Ltd.