introduction : the dynamic interaction between mother and infant is one of the indicative factors of infants’ social and emotional development especially in stressful situations as cognitive evaluating. methods: an experimental study was completed in 2010 in tehran on a total of 40 infants (18 boys and 22girls) forming two alternative groups and varying in age of infancy (4, 6, 8, 10 and 12 mon...

A unique human characteristic is our ability to mind wander—these are periods of time when our attention drifts away from the task-at-hand to focus on thoughts that are unrelated to the task. Mind wandering has some benefits, such as increased creativity, but it also has some negative consequences, such as mistakes in the task we are supposed to be performing. Interestingly, we spend up to half...

We applied the external noise plus attention paradigm to study attention mechanisms involved in concurrent first-order and second-order motion perception at two spatial locations. Cued to attend to one of the locations, the observer was instructed to independently judge direction of motion of either first-order (Experiment 1) or second-order (Experiment 2) motion stimuli at both locations in ev...

chitosan with excellent biodegradable and biocompatible characteristics has received attention as an oral drug delivery vehicle for controlled-release formulations. in this study an enteric-coated capsule containing theophylline-chitosan beads based on 23 factorial designs was prepared as a colon drug delivery system. the theophylline-chitosan gel beads were formulated by adding the drug-contai...

This experiment followed up on previous studies showing learning benefits of instructions directing the performers’ attention to the effects of their movements (external focus) relative to instructions directing attention to the movements themselves (internal focus). The main purpose was to determine whether similar advantages could be achieved by preventing learners from focusing on their move...

One primary function of spatial attention is to exclude external noise [e.g., Psychol. Sci. 11(2) (2000) 139], especially in the region of the target stimulus [J. Vis. 2(4) (2000) 312]. What is not known is the spatial profile of external noise exclusion in the vicinity of the target and how this depends upon attention. The spatial region around an oriented Gabor target was segmented into four ...

Recent work using the eye movement monitoring technique has demonstrated that when people are engaged in thought they tend to disengage from the external world by blinking or fixating on an empty portion of the visual field, such as a blank wall, or out the window at the sky. This 'looking at nothing' behavior has been observed during thinking that does not explicitly involve visual imagery (mi...

The purpose of this study was to examine the effectiveness of external and internal focus of attention instructions on running economy at a submaximal velocity. Twenty-four male physical education students ran on a treadmill at a velocity of 9.6 km·hr-1 in two 10-minute counterbalanced conditions: external focus (watching a video of running from the runner’s perspective), and internal focus (fo...

The current study examined the possible additive benefits of focus of attention (FOA) on observational learning, mental imagery, and physical practice. Utilizing a full-body multiphase physical task allowed us to examine the influence of each of these effects on overall athletic performance. Subjects were limited to experts in the selected long-jump task. Internal and external foci of attention...

The external walls are regarded as an important source for the thermal exchange between the outside and inside of a building. Despite the significance of building walls for energy savings, a large body of research has focused mainly on thermal comfort, environmental impacts, and economic costs of residential buildings. However, few researchers have addressed the thermal performance of common bu...