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ReferencesNavigation arrowAuthorsNavigation arrowBarbara L. Carlton
Jun 19

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Barbara L. Carlton

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Publications by Barbara L. Carlton (bibliography)

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1989
 
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Vercruyssen, Max, Carlton, Barbara L. and Diggles-Buckles, Virginia (1989): Aging, Reaction Time, and Stages of Information Processing. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 174-178.

“Using Sternberg's (1969) Additive Factors Method (AFM), previous investigations in search of the locus of age-related slowing in reactive capacity have found conflicting results possibly due to inconsistencies in research methodologies. This experiment was conducted to examine age differences in the performance of AFM intratask manipulations of a reaction time task using both fixed and variable foreperiod conditions with subject testing at both naive and practiced skill levels. Twenty male subjects, ten young and ten old, performed a visual four-choice RT task with intratask manipulations of stimulus-degradation, stimulus-response compatibility, and response-stimulus intervals (RSIs were fixed at 0, 2, and 5 sec and variable with random presentations at 0, 2, and 5 sec), once when subjects were naive and again when practiced. The results varied by level of practice and RSI, but clearly the older subjects had difficulty with the intratask manipulations. The older subjects took twice as long, on the average, to respond. Interactions of age by compatibility suggest that, according to the AFM, with age comes inordinately long delays in the response selection stage of information processing. Conclusions are made with caution since this research points to limitations and methodological confounds which serve to explain many of the equivocal findings in previous studies.”

© All rights reserved Vercruyssen et al. and/or Human Factors Society

1988
 
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Vercruyssen, Max, Cann, Michael T., McDowd, Joan M., Birren, James E., Carlton, Barbara L., Burton, Jane and Hancock, P. A. (1988): Effects of Age, Gender, Activation, Stimulus Degradation and Practice on Attention and Visual Choice Reaction Time. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 203-207.

“This paper presents research conducted by the authors and others investigating the interaction of a variety of variables which are presumed to affect reaction time in hopes of obtaining much needed information on factors influencing age effects on attention and information processing. Reported is progress to date on an experiment which shows that the effects of age on central nervous system speed, as measured by visual choice reaction time, depends on many factors, including the gender, neural activation level, and skill of the subject as well as the stimulus quality and type of reaction task employed.”

© All rights reserved Vercruyssen et al. and/or Human Factors Society

 
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Carlton, Barbara L., Vercruyssen, Max, McDowd, Joan M. and Birren, James E. (1988): Effects of Age and Practice on Attention and Stages of Information Processing using CRT with Fixed and Variable Foreperiods. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 208-212.

“The results of previous investigations have found conflicting results on the locus of age-related slowing of reaction time using Additive Factors Method (Sternberg, 1969). This experiment was conducted to examine the differential effects of Additive Factors Method task manipulations using both fixed and variable foreperiod conditions with practice preceding a second day replication to quantify the interaction of these effects with skill. The results show that (1) practice is a major confounding for research involving RT tasks, (2) the locus of age effects may lie in the later response selection stage of processing, and (3) the effects of aging, practice and intra-task factors depend on the response-stimulus interval characterizing the RT task. This research has implications for improving research methodologies and understanding the nature of age-related slowing in central nervous system functions.”

© All rights reserved Carlton et al. and/or Human Factors Society

 
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Changes to this page (author)

26 Jun 2007: Modified
25 Jun 2007: Modified
25 Jun 2007: Added

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Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

-- Steve Krug, Don't Make Me Think, p. 136

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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