Type of research: basic Duration from: 04/01/91. to 04/01/94. Papers on project (total): 24
Papers on project quoted in Current Contents: 1
Institution name: Filozofski fakultet - Humanističke znanosti, Zagreb (130) Department/Institute: Department of Psychology Address: Ivana Lučića 3 City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 6 120 216
Phone: 385 (0)1 6 120 187
Fax: 385 (0)1 6 120 037
E-mail: bsverko@filozof.ffzg.hr
E-mail: zjerneic@filozof.ffzg.hr
Summary: The main studies analyzed (1) the factor structure of
time-sharing performance, (2) its relation to cognitive traits, and (3)
its age-related differences. Computerized choice-reactions and tracking
tasks, performed both singly and in dual-task combinations, were used. In
one study they were performed by 98 students who also completed a series
of paper-and-pencil tests. In another study 80 truck drivers, ranging
in age from 20 to 61 years, performed the tasks. Our third study, with
112 students, further examined the problem by extending the analysis to
higher levels of time-sharing practice. The analyses of results indicate
that time-sharing performance, compared to single-task performance,
exhibits some distinctive features: in factor analysis it defines its
own factors, it reveals enhanced relationship to cognitive abilities, and
shows a faster decline with age in adulthood. All this supports the
notion of time-sharing ability. Other studies have dealt with efficacy of
warning signals for alerting population and with ergonomic aspects of new
technology. Since the evaluation of the public alarm system disclosed a
number of shortcomings, an improved system was worked out. It was
officially accepted in 1993 as the new Croatian alarm system.
Research goals: Modern operators, such as pilots or air-traffic
controllers, are often required to perform different complex tasks
involving time-sharing performance. The term 'complex task' denotes here
any multiple task composed by two or more component tasks that are to be
performed virtually simultaneously. The main aim of this project was: (1)
to analyze the ability structure underlying performance of concurrently
performed tasks, on both low and high levels of practice; (2) to examine
the relationship of time-sharing performance to relevant cognitive
abilities and personality traits; and (3) to explore age differences in
time-sharing performance. It has been expected that time-sharing
performance, compared to single-task performance, would exhibit different
factor structure, enhanced relations to cognitive abilities and faster
decline with age in adulthood. This supports the hypothesis that
time-shared tasks may tap some additional individual differences which are
expected to improve the validity of assessment procedures.
Additional aim was to study some ergonomic aspects of new technology and
to examine the efficacy of Croatian public system for alerting population.
COOPERATION - INSTITUTIONS
Name of institution
: Stožer Civilne zaštite Republike Hrvatske Type of institution: Institution whose primary activities ar Type of cooperation: Occasional exchange of information City: 10000 - Zagreb, Croatia
Name of institution
: Zavod za prometnu medicinu i psihologiju
prometa Type of institution: International organization Type of cooperation: Occasional exchange of information City: 10000 - Zagreb, Croatia Other information about the project.