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Assessment, Vol. 15, No. 2, 145-152 (2008)
DOI: 10.1177/1073191107308106

The Temporal Stability of the Effects Induced by the Cued Reaction Time Task

Francesco Versace

University of Bologna, University of Florida, fversace{at}mdanderson.org,

Michela Mazzetti

University of Bologna

Maurizio Codispoti

University of Bologna

The temporal stability of the effects induced by the Cued Reaction Time Task (CRTT) on the orienting of attention was assessed across four weekly sessions. Benefits, costs, and validity effects were computed for each session, and the correlation coefficients between each session were calculated (interindividual stability index). Intraindividual stability indices, the percentage of individuals showing both costs and benefits or the validity effect, were also calculated. The results (based on 41 participants) show a low stability for the effects in which the neutral trials were involved (benefits and costs) but an acceptable reliability for the validity effect, especially when evaluated using the intraindividual index. To maximize the reliability of the data collected using the CRTT, the validity effect seems to be a better probe of spatial orienting of attention.

Key Words: temporal stability • Cued Reaction Time Task • orienting • attention • validity effect


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