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Maintaining alertness for prolong period of time is crucial for
variety of tasks. However alertness tends to decline after
certain interval of time. Several factors are responsible for this
decrement in alertness. Among these factors the effect of task
demand and intrinsic motivation has not been explored much.
Thus, the present study examined the effects of intrinsic
motivational state and task demand (in terms of event rate) on
vigilance task performance. Target and non target were the
square of size 3.5 cm and 3.3 cm, respectively. High and low
event rate was used. Forty three undergraduate and post
graduate volunteer students of Banaras Hindu University in the
age range of 18 to 23 years were randomly selected for the
experiment. The participant’s task was to make a speeded
decision about the presence or absence of the target by pressing
the response key. A 2 (low and high event rate) x 2 (pre and
post level of intrinsic motivation) x 4 (time period: 4 Blocks of
10 minutes each) mixed factorial design with repeated measure
on the last two factors was used. Results revealed that
participants employed in low task load condition (low event
rate) showed better vigilance performance than participants on
high cognitive load condition. Since high cognitive demand
produces great task induced stress performance declined in
high task load condition. Results further indicated that
motivational dimension of state variables significantly got
reduced after performing on vigilance task.
Anurag Upadhyay, Richa Singh. (2013) Effect of Task Demand and Intrinsic Motivation on Human Vigilance Task Performance, Pakistan Journal of Psychological Research, Volume-28, Issue-2.
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