The effects of goal difficulty on physiological arousal, cognition, and task performance.

Conducted 2 laboratory experiments with 117 undergraduates to examine (1) the effect of assigned goal difficulty on arousal (self-report and heart rate), cognition (perceived norm, self-efficacy strength, and personal goal), and behavioral (task performance) measures and (2) the role of heart rate as a mediator of the goal-difficulty–performance relation. All Ss performed a task requiring cognitive and physical responses. Results of both experiments demonstrate that assigned goal difficulty affected heart rate, cognition, and task performance and that heart rate change was positively related to the cognitive and behavioral measures. Regression analyses suggested that a cognitive–affective mechanism may mediate the goal-difficulty–performance relation. Discussion is focused on the theoretical and practical implications of integrating an arousal concept within goal-setting theory. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

What is being masked in object substitution masking?

Object substitution masking (OSM) is said to occur when a perceptual object is hypothesized that is mismatched by subsequent sensory evidence, leading to a new hypothesized object being substituted for the first. For example, when a brief target is accompanied by a longer lasting display of nonoverlapping mask elements, reporting of target features may be impaired. J. T. Enns and V. Di Lollo (2000) considered it an outstanding question whether OSM masks some or all aspects of a target. The authors report three experiments demonstrating that OSM can selectively affect target features. Participants may be able to detect a target while being unable to report other aspects of it or to report the color but not the orientation of a target (or vice versa). We discuss these findings in relation to two other visual phenomena. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A comparison of linear and nonlinear relations between organizational commitment and work outcomes.

The authors compared linear and nonlinear relations between affective and continuance commitment and 3 commonly studied work outcomes (turnover cognitions, absenteeism, and job performance), observed in 3 separate research settings. Using a linear model, they replicated the common observation in the literature that affective commitment is more strongly related to work outcomes than continuance commitment. Introducing a higher order continuance commitment term into the same equations, however, they found that the linear model seriously understated the magnitude of continuance commitment's effect on all 3 criterion measures. These findings are consistent with recent developments that identify different motivational mindsets associated with affective and continuance commitment (J. P. Meyer, T. E. Becker, & C. Vandenberghe, 2004). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Low-Voltage Percussion Welding

The requirement for new and better connecting techniques in the assembly of telephone apparatus has promoted increased use of welding. A low-voltage percussion welding process has been developed to a stage of reliability and quality which makes its utilization attractive for selected applications. The process is a direct capacitor discharge arc method in which the weld energy is closely controlled by the capacity included in the welding circuit, the voltage to which the capacitors are charged, and the duration of the arc as regulated by the mechanical parameters of the welding device. The low charging voltage is inherently safe to personnel and permits welding both electromechanical and most semiconductor devices without danger of electrical damage. In addition, the short weld time interval of 200-300 microseconds limits heat transfer to such a minute value that the process is particularly attractive for connecting heat sensitive devices. The process currently is applied to weld leads to resistor caps, weld leads to dry reed switches, weld capacitors and resistors to fabricated network circuit boards.     

Organizational commitment and job performance: It's the nature of the commitment that counts.

In this study, we examined relations between the performance of first-level managers in a large food service company and their affective commitment (i.e., emotional attachment to, identification with, and involvement in the organization), continuance commitment (i.e., perceived costs associated with leaving the company), and job satisfaction. Commitment and satisfaction scores were correlated with three indexes of performance obtained from the managers' immediate supervisors. As predicted, affective commitment correlated positively and continuance commitment correlated negatively with all three measures of performance. Job satisfaction did not correlate significantly with performance ratings. The findings are interpreted as illustrating the importance of distinguishing between commitment based on desire and commitment based on need and as supporting organizational efforts to foster affective commitment in their employees. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of object onset on the distribution of visual attention.

There now exists considerable evidence to suggest that the appearance of a new object in the visual field captures visual attention. One of the consequences of this attentional capture is that the object initiates a redistribution of attentional resources across visual space. This is classically observed in the precuing paradigm in which the onset of an abrupt cue influences the processing of a subsequently presented target. The present research describes a new phenomenon that occurs as a result of a new object appearing in the visual field. A stimulus presented in a region of space adjacent to a comer of an onsetting object receives an enhancement of processing relative to a stimulus presented adjacent to one of the object's straight edges. With the use of 2 converging methods, evidence is presented that suggests that the effect is a higher order attentional phenomenon whereby greater resources become directed to the comers of objects. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How does target duration affect object substitution masking?

Object substitution masking (OSM) is typically studied using a brief search display. The target item may be indicated by a cue/mask surrounding but not overlapping it. Report of the target is reduced when mask offset trails target offset rather than being simultaneous with it. We report 5 experiments investigating whether OSM can be obtained if the search display is on view for a period of up to 830 ms but cueing of the target location is delayed. The question of interest is whether OSM must reflect the initial response of the visual system to target onset or whether it can arise in other ways, possibly during the transition from a pre-attentive representation of the target item to an attentional representation of it. Our results show that OSM decreases in strength as target duration increases. An explanation is suggested in terms of the object individuation hypothesis (Lleras & Moore, 2003). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Wiki deployment in corporate settings

Our research question concerns the usefulness of wikis in corporate settings. The answer to this question is not clear. On one hand, business firms are aware of the impact wikis have had on the Internet, and perceive wikis as an up-and-coming technology for supporting collaborative work. On the other hand, the fundamental principles underlying wikis - openness, non-attribution, egalitarianism, and decentralized control - run in contrast to traditional command-and-control management. To date, little information is available regarding wikis' usage in corporate settings. This paper examines the actual use of wikis in a business setting, to identify factors driving user participation, and to assess the extent to which wikis provide value to both individuals and the organization.