Impulse control · Response inhibition

Go / No-Go

The Go/No-Go paradigm (Rosvold 1956; standardized in developmental studies by Bezdjian et al. 2009) trains response inhibition against a strong prepotent response. Widely used in ADHD research.

DifficultyExpert = strict academic parameters

Age band (for scoring reference)Not signed in (scores won't count toward profile)

Intermediate: 100 trials, 75% Go, 800ms stimuli.

Most trials are Go (green circle) — press space or tap immediately. Some are No-Go (red square) — hold back! Be fast AND accurate.

History

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References: Bezdjian et al. (2009); Simmonds et al. (2008); Williams et al. (1999).

Scientific basis

Go/No-Go · scientific basis

Response inhibition & impulse control

Go/No-Go traces back to Donders (1868) reaction-time studies; it became a standalone paradigm after Rosvold (1956) CPT. Bezdjian et al. (2009) standardized the task for development research on N=1,151 children.

Expert-mode parameters

These are the standard parameters from the canonical paradigm (used by the "Expert" difficulty).

Parameter	Standard value	Source
Stimulus duration (Expert)	500 ms	Bezdjian 2009
ITI	1000 ms	Bezdjian 2009
Go:No-Go ratio	75:25	Bezdjian 2009; Simmonds 2008
Trial count	160	Bezdjian 2009

Healthy-population norms (by age)

Impulse control matures from childhood to ~age 20. Thresholds derived from Bezdjian 2009 (n=1,151 children/teens), Wessel 2018 (adults), and Simpson 2012 mean/SD by age band; 'commission-rate excellent' corresponds to mean − 1 SD. Commission rate is the core index of inhibition failure. Assessment mode matches your actual age.

Limitations： Primary source is Bezdjian 2009 (peer-reviewed, n=1,151, ages 6-17 — strong evidence for children/teens). Adults 18-34 y are supported by Wessel 2018 and the Simmonds 2008 meta-analysis. Bands 12-13, 14-17, 35-44 and 55-64 y are mostly interpolated (flagged est in norms.ts); the 65+ band leans on Williams 1999 lifespan data but remains extrapolated. Go:No-Go ratio (75:25) and stimulus duration (500 ms) must match Bezdjian 2009 for direct comparison; deviations can shift commission rates by 5-10 percentage points. Cross-reference with Stop-Signal or SART (also response-inhibition paradigms in this app).

Age band	Commission rate Excellent	Commission rate mean	Go RT mean (ms)	Evidence
Age 8-9	≤ 14%	~32%	~480	weak (extrap.)
Age 10-11	≤ 11%	~26%	~440	strong
Age 12-13	≤ 9%	~22%	~410	medium
Age 14-15	≤ 7%	~18%	~390	weak (interp.)
Age 16-17	≤ 6%	~16%	~375	weak (interp.)
Age 18-24	≤ 4%	~13%	~365	strong
Age 25-34	≤ 4%	~13%	~370	strong
Age 35-44	≤ 4%	~14%	~385	weak (interp.)
Age 45-54	≤ 5%	~16%	~410	weak (interp.)
Age 55-64	≤ 6%	~18%	~445	weak (interp.)
Age 65+	≤ 8%	~22%	~500	medium

Standard output metrics

·Go hit rate — Correct presses on Go trials
·Commission errors — Erroneous presses on No-Go (impulse index)
·Omission errors — Missed Go trials (attention index)
·Go RT — Mean RT on correct Go trials
·d' — Signal-detection sensitivity

Citations

Bezdjian, S., Baker, L. A., Lozano, D. I., & Raine, A. (2009). Assessing inattention and impulsivity in children during the Go/NoGo task. Br J Dev Psychol, 27(2), 365-383. DOI
Simmonds, D. J., Pekar, J. J., & Mostofsky, S. H. (2008). Meta-analysis of Go/No-go tasks. Neuropsychologia, 46(1), 224-232. DOI
Williams, B. R., Ponesse, J. S., Schachar, R. J., Logan, G. D., & Tannock, R. (1999). Development of inhibitory control across the life span. Dev Psychol, 35(1), 205-213. DOI
Wiersema, J. R., van der Meere, J. J., & Roeyers, H. (2007). Developmental changes in error monitoring. Neuropsychologia, 45(8), 1649-1657. DOI

All reference ranges come from published peer-reviewed literature. For personal training reference only — not a medical diagnosis. Full methodology: docs/PARADIGMS.md.

This tool is for educational and entertainment purposes only and does not constitute medical advice or a clinical diagnosis.