N-back response time increases and accuracy decreases with cognitive load, and Posner cue conditions differ in speed and accuracy trade-offs¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2020 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Response time rose and accuracy fell from 1-back to 3-back (all p < 0.05); on the attention task, the no cue condition was slowest but most accurate, valid cues fastest, and invalid cues least accurate. → Stefansdottir 2020

Evidence¶

Stefansdottir 2020¶

Stefansdottir, R., Gundersen, H., Rognvaldsdottir, V., Lundervold, A. S., Gestsdottir, S., Gudmundsdottir, S. L., Chen, K. Y., Brychta, R. J. & Johannsson, E. (2020). Association between free-living sleep and memory and attention in healthy adolescents. Scientific Reports 10:16877. https://doi.org/10.1038/s41598-020-73774-x

q3 · i? · associational · r2

Mixed-effect regression with Bonferroni post hoc correction across 160 adolescents; on the attention task "The no cue presentation elicited the slowest but most accurate responses" (all p < 0.001 across conditions).

"Response time and accuracy varied predictably across cognitive load: response time gradually increased while accuracy decreased in a dose–response manner from the 1-back to the 2-back and 3-back conditions (all p < 0.05)"

Discussion¶

Related Claims¶

• Reaction times differ significantly across all three cue conditions, with fastest RT for valid cues and slowest for no-cue stimuli — related
• A significant main effect of stimuli category exists on reaction time in the Posner cue task — related
• Reaction times are faster during threat than safe conditions only on the high-load (3-back) task, in both adolescents and adults — related
• Working memory load degrades discrimination accuracy and slows responses in youth — possibly the same claim (merge candidate)
• Free-living sleep measures show no association with visual attention task performance in older adolescents — related
• Threat of an aversive scream lowers verbal working memory accuracy at low and medium load but not at high load in both adolescents and adults — related
• Higher cardiorespiratory fitness is associated with faster reaction times for stimuli following valid cues in healthy male high-school students — related
• With increasing n-back task difficulty, reaction times increase and accuracy decreases — possibly the same claim (merge candidate)
• Neither muscle mass nor weekly training frequency is associated with reaction time across cue conditions in healthy male high-school students — related