Adolescents and educated adults require more time to compare common-denominator fractions after a common-numerator prime than after a control prime (negative priming effect)¶

Claim · All claims
Evidence · 1 study · causal r2 · q3
Currency · newest study 2019 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Participants were slower to compare common-denominator fractions (probe) after a common-numerator prime than after a denominator-numerator control prime, indicating the 'greater the whole number, the greater the fraction' strategy was inhibited on the prime and its reactivation was disrupted on the probe. → Rossi 2019

Evidence¶

Rossi 2019¶

Rossi, S., Vidal, J., Letang, M., Houdé, O., & Borst, G. (2019). Adolescents and Adults Need Inhibitory Control to Compare Fractions. Journal of Numerical Cognition, 5(3), 314-336. https://doi.org/10.5964/jnc.v5i3.197

q3 · i? · causal · r2

In this experimental study, 20 adolescents and 30 adults completed a negative priming paradigm adapted to fraction comparison. A paired comparison of probe RTs showed slower responses on test-trial probes than control-trial probes: "adolescents and adults required more time to perform common denominator items preceded by common numerator items" than after control primes. No effect size was reported for this paired contrast beyond Cohen's d values reported separately by group.

"adolescents and adults required more time to perform common denominator items preceded by common numerator items (test trials: M = 2730 ± 863 ms for adolescents and 2421 ± 1010 ms for adults) than those preceded by a denominator-numerator item (2538 ± 859 ms for adolescents and M = 2287 ± 960 ms for adults)"

Discussion¶

Related Claims¶

• Participants required more time and committed more errors when comparing fractions with common numerators than with common denominators — related
• Participants committed more errors on common-numerator prime items than on denominator-numerator control prime items — related
• The amplitude of the negative priming effect did not differ between adolescents and adults — related
• The negative priming effect on probe RTs was statistically significant in both adolescents (Cohen's d = 1.07) and adults (Cohen's d = 0.73) — a narrower finding that bears on this claim
• No significant differences in probe error rates between test and control trials were found, suggesting the negative priming RT effect is not due to speed-accuracy trade-offs — related
• Monolinguals but not bilinguals show residual inhibition of phonological competitors on negative-priming probes — related
• Equal accuracy on fraction comparison items can mask fundamentally different misconceptions — related