1987
DOI: 10.1080/00049538708259058
|View full text |Cite
|
Sign up to set email alerts
|

Decision time unmasked: Individuals adopt different strategies

Abstract: The decision time/movement time (DT/MT) measures which are obtained when using reaction-time apparatus incorporating a home key are being used to investigate a wide range of group differences. It is usually assumed that the time from stimulus onset to release of the home key is a good measure of central processin speed. It is on or just after detecting rather than fully identifying the stimulus, thus giving an invalidly short DT and long MT. Two experiments are described which show subjects do use such a detec… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
7
0
1

Year Published

1990
1990
2020
2020

Publication Types

Select...
9

Relationship

0
9

Authors

Journals

citations
Cited by 33 publications
(8 citation statements)
references
References 8 publications
0
7
0
1
Order By: Relevance
“…It is also likely that information-processing deficits contributed to the deficits noted in the movement time of RT tasks, which are reportedly not pure measures of motor speed (Smith & Carew, 1987 ;Vercoulen et al 1998). Moreover, fine motor speed was not impaired in persons with CFS, making it unlikely that motor functioning is predominately responsible for slower RTs.…”
Section: Discussionmentioning
confidence: 99%
“…It is also likely that information-processing deficits contributed to the deficits noted in the movement time of RT tasks, which are reportedly not pure measures of motor speed (Smith & Carew, 1987 ;Vercoulen et al 1998). Moreover, fine motor speed was not impaired in persons with CFS, making it unlikely that motor functioning is predominately responsible for slower RTs.…”
Section: Discussionmentioning
confidence: 99%
“…In short, the combination of very short post-key-release movements, the feedback triggered by relatively long post-key-release times, and the removal of stimulus from display after key release (when applicable, viz., responses shorter than 160 ms) were safeguards in place to prevent decision processes from occurring past our recorded decision times (see Smith and Carew, 1987, for possible participants’ strategies that may distort the measurement of RT in a similar paradigm than ours). It is nevertheless possible that, in our design, some cognitive processes may still be taking place post key release (e.g., self monitoring), but we know of no evidence to suggest that these processes do not occur when responses are made by key press as well or that they are part of the decision processes we model.…”
Section: Experiments 1 Andmentioning
confidence: 99%
“…Although DT and MT tend to load on two orthogonal factors [13], moderate correlations between DT and MT are reported in many studies [6]. The view that some degree of process contamination exists in both of these measures is supported by two experiments showing that participants release the home key immediately after detecting the stimulus, but before finalizing their decision, in anticipation of their response [14]. These results suggest that a clear-cut distinction between decision times and movement times cannot be easily achieved by a home-button setup and that other methods have to be employed to obtain a process-pure measurement of the speed of information processing.…”
Section: Introductionmentioning
confidence: 99%