Adults with ADHD score lower on the MPQ Achievement scale, a surrogate trait measure of motivation, than controls¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 2011 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2016: baselines and conditions change
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i? ADHD participants scored significantly lower on the Achievement scale than controls (11±5 vs 15±3, t=3.5, p<0.001). → Volkow ND 2011
Evidence¶
Volkow ND 2011¶
Volkow ND, Wang GJ, Newcorn JH, Kollins SH, Wigal TL, Telang F, Fowler JS, Goldstein RZ, Klein N, Logan J, Wong C, Swanson JM. (2011). Motivation Deficit in ADHD is Associated with Dysfunction of the Dopamine Reward Pathway. Molecular Psychiatry 16(11). https://doi.org/10.1038/mp.2010.97
q3 · i? · associational · r2
Group comparison in the PET imaging cohort of 45 never-medicated ADHD participants and 41 controls; independent t test showed the ADHD group's Achievement scale mean of 11±5 was lower than controls' 15±3, with "t = 3.5, p <0.001". No effect size printed.
"The scores on the Achievement scale (surrogate trait measure of motivation) was significantly lower in ADHD participants than in controls (11±5 vs 15±3; t = 3.5, p <0.001)."
Discussion¶
Related Claims¶
- ADHD adults show lower D2/D3 receptor and DAT availability in nucleus accumbens and midbrain than controls — related
- Lower trait motivation scores in ADHD adults are associated with more severe inattention symptoms, but not hyperactivity — related
- Adults with ADHD report more real-world creative achievements than healthy controls — reports the opposite
- Intrinsic motivation during idea generation does not differ between adults with ADHD and controls — related
- In adults with ADHD, dopamine D2/D3 receptor and DAT availability in the reward pathway correlate positively with trait motivation — related
- Positive Emotionality correlates with midbrain D2/D3 receptor availability in ADHD adults, while Negative Emotionality and Constraint do not — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
adhd-lower-mpq-achievement-scale |
title |
Adults with ADHD score lower on the MPQ Achievement scale, a surrogate trait measure of motivation, than controls |
description |
Adults with ADHD score lower on the MPQ Achievement scale, a surrogate trait measure of motivation, than controls |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2011 |
recheck_by |
2016 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — volkow-nd-2011 |
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