EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
In 35 inpatient methamphetamine-treatment patients, smartphone n-back practice coincided with selected self-reported gains. Read real nulls and forensic limits.
Read guideOct 20, 2026
A 79-person primary study found slower Trail Making performance in early methamphetamine abstinence, with complex-task errors, real nulls and forensic limits.
Read guideOct 20, 2026
In a 30-patient methamphetamine contingency-management pilot plus 23 controls, adjusted Trail Making performance differed by response, while CPT lost significance after correction.
Read guideOct 20, 2026
A 37-person methylphenidate PET/fMRI trial found better 2-ball accuracy (p=.023), but not 3-ball accuracy or mean response speed. Imaging is not a blood assay.
Read guideOct 20, 2026
A randomized dexamphetamine obesity study found no treatment-specific improvement in stop-signal inhibition or executive-function ratings. Understand n=47 and why p=.039 does not settle causation.
Read guideOct 20, 2026
A 34-person residential trial found more craving after switching from supervised d-amphetamine to placebo. See the real outcomes, nulls, and forensic limits.
Read guideOct 20, 2026
In a 15-woman caffeine crossover, reactions were faster and stimulus-locked P3b timing mediated about one-third of the modeled effect; blood caffeine and driving were not tested.
Read guideOct 20, 2026
A 121-adult study found lower accuracy for mentally reordered digits, but no group-specific reaction-time difference. What it does—and does not—prove.
Read guideOct 20, 2026
A 159-person study linked some FAAH variants to self-reported arousal and fatigue after 10 mg d-amphetamine; why this cannot predict blood levels or DUI impairment.
Read guideOct 20, 2026
A 165-person controlled study found opposite associations for baseline attention lapses and stop-signal inhibition with oral d-amphetamine liking. What it cannot prove.
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