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Can Slower Responses Coexist With Preserved Conflict Control After Methamphetamine Abstinence?
A 48-person flanker study found overall slowing but no demonstrated group difference in conflict effects or post-error slowing. Selection and cross-sectional design limit claims of recovery.
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Can an Average Brain Response Hide Changing Methamphetamine Cue Reactivity?
An exploratory study analyzed changing cue and response-inhibition signals across a single session. Without repeated craving ratings or a control group, neural habituation cannot establish reduced craving or treatment benefit.
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Why Personalizing Choice Difficulty Matters in Methamphetamine Brain-Imaging Research
A 29-person historical study tailored easy and hard monetary choices to each participant. Its imaging differences did not explain the group difference in delay discounting.
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Do Similar Balloon-Pumping Choices Mean Similar Brain Responses? A Methamphetamine Risk Study
A historical study found no significant difference in average balloon pumping, despite differences in earnings and risk-related brain responses. Task and resting-state analyses used different sample sizes.
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Why ADHD History Matters When Interpreting Everyday Function in Methamphetamine Research
A 755-person observational study linked ADHD history with everyday difficulties among participants with methamphetamine-use histories. It does not establish drug-caused ADHD or individual disability.
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Does Drug of Choice Identify a Single Executive Deficit? Comparing Methamphetamine, Cocaine and Alcohol Groups
A historical four-group study found that gambling, working-memory, switching and stopping results did not move together. Sex effects and incomplete task data require careful qualification.
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Do Adults Recovering From Methamphetamine Addiction Recognize Everyday Executive Difficulties?
A historical study compared self-reported everyday difficulties with a monetary-choice task. Group-level agreement does not validate an individual’s insight or prove functional incapacity.
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Does Better Stroop Performance After a Year of Methamphetamine Abstinence Prove Recovery?
A historical 98-person comparison found similar Stroop interference in long-abstinent participants and controls. Its cross-sectional design cannot show that the same people recovered over time.
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Are Slower Responses, More Errors and Higher Impulsivity the Same Finding? A 39-Person Methamphetamine fMRI Study
A 2023 study found higher self-reported impulsivity and fewer correct responses without a significant group difference in Stroop response time. Its imaging findings also require attention to statistical thresholds.
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Why Recent Urine Results Changed an Attention Study’s Methamphetamine Findings
In a 205-participant study involving HIV and methamphetamine histories, attention associations became nonsignificant after excluding positive methamphetamine urine screens. The sensitivity analysis matters without proving acute impairment.
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Can Attention Improve While Delayed-Reward Choices Stay the Same? A Methamphetamine Treatment Pilot
A three-month pilot found different trajectories for sustained attention and delayed-reward choices. Follow-up loss and the absence of an untreated patient group limit treatment claims.
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Does a Month of Methamphetamine Abstinence Improve Cognitive Scores Beyond Practice? A Longitudinal Study
Retesting can improve scores without demonstrating recovery. A 2010 study followed methamphetamine-dependent participants and comparison adults, finding no significant overall difference in change.
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Why Response Time Changes a Methamphetamine Brain-Scan Comparison: A 28-Person Early-Abstinence Study
A historical fMRI study shows why slower responses can change the interpretation of brain activation. Its adjusted and unadjusted analyses answered different questions.
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Why Working-Memory Load Matters in Methamphetamine Imaging: A 109-Participant Study
A community study found working-memory and brain-response differences that became clearer at the highest task load. Its observations do not establish an individual diagnostic scan.
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Does Choosing Immediate Money Prove Impaired Judgment? A Methamphetamine Delay-Discounting Study
A historical imaging study found steeper delay discounting in an abstinent treatment group. Laboratory monetary choices do not determine individual judgment, intent or driving impairment.
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Can Similar Gambling Scores Conceal Different Learning Strategies? A 32-Person Methamphetamine Study
A historical two-armed-bandit study found similar overall earnings despite differences in fitted learning and choice parameters. Model estimates are not direct measurements of beliefs.
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Can Average Stroop Performance Miss a Conflict-Adaptation Difference? A 60-Person Methamphetamine Study
A historical study distinguished the immediate Stroop conflict effect from adjustment after a preceding conflict trial. The groups differed on one measure but not the other.
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Does a DTI Finding Prove Methamphetamine White-Matter Injury? The 54-Person Study and Its Null Results
A historical study linked an imaging metric with Stroop interference, while the corrected group difference in that metric remained nonsignificant.
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Do Cognitive Test Results Explain Unemployment After Methamphetamine Dependence? A 110-Adult Study
A historical study found associations between cognition and employment, but its cross-sectional design could not establish why an individual was unemployed or whether rehabilitation would restore employment.
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Does a Methamphetamine “Denial” Score Measure Dishonesty? What a 58-Person Study Tested
A historical study linked a self-reported readiness-to-change scale with cognition and selected imaging measures. It did not validate a lie detector or a test of individual credibility.