TY - JOUR

T1 - A problem in measuring the stroop facilitation and interference effects

T2 - Implications for measuring performance change in general

AU - Chen, Jenn Yeu

PY - 1996/12

Y1 - 1996/12

N2 - The Stroop facilitation and interference effects as observed in the Stroop color-naming task are typically measured as the difference in naming time between the congruent or the conflicting condition and the neutral condition. The measure assumes the regression function relating the congruent or conflicting naming time to neutral naming time is linear with a slope of one and a nonzero intercept. Instead, analysis showed that the regression function subserving the facilitation effect, in fact, had a slope of less than one with a zero intercept. Analysis also showed that the regression function subserving the interference effect had a zero intercept with a greater than one slope. These results suggest that the Stroop facilitation and interference effects are the consequence of a multiplicative process by which each stage of the naming process is reduced or increased by a constant proportion. Also the appropriate measure of the Stroop effect is the ratio of the congruent (for facilitation) or the conflicting (for interference) naming time over the neutral naming time.

AB - The Stroop facilitation and interference effects as observed in the Stroop color-naming task are typically measured as the difference in naming time between the congruent or the conflicting condition and the neutral condition. The measure assumes the regression function relating the congruent or conflicting naming time to neutral naming time is linear with a slope of one and a nonzero intercept. Instead, analysis showed that the regression function subserving the facilitation effect, in fact, had a slope of less than one with a zero intercept. Analysis also showed that the regression function subserving the interference effect had a zero intercept with a greater than one slope. These results suggest that the Stroop facilitation and interference effects are the consequence of a multiplicative process by which each stage of the naming process is reduced or increased by a constant proportion. Also the appropriate measure of the Stroop effect is the ratio of the congruent (for facilitation) or the conflicting (for interference) naming time over the neutral naming time.

UR - http://www.scopus.com/inward/record.url?scp=1842638120&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1842638120&partnerID=8YFLogxK

U2 - 10.2466/pms.1996.83.3.1059

DO - 10.2466/pms.1996.83.3.1059

M3 - Article

C2 - 8961342

AN - SCOPUS:1842638120

VL - 85

SP - 1059

EP - 1070

JO - Perceptual and Motor Skills

JF - Perceptual and Motor Skills

SN - 0031-5125

IS - 3 PART 1

ER -