On 2014 Jul 14, K Rubia commented:

There is in fact an error in the discussion. The negative correlation reported in the results section is correct. The mention of a positive correlation between premature response errors in ADHD and precuneus activation is incorrect. We apologise for this oversight and any confusion this may cause.

On 2014 Jul 06, Francisco Xavier Castellanos commented:

There seems to be an error in this otherwise excellent paper contrasting boys with Attention-Deficit/Hyperactivity Disorder (ADHD) and Autism Spectrum Disorder (ASD). Near the bottom of page 241, left column, the authors wrote “For ADHD boys, precuneus activation was significantly negatively correlated with premature errors (r = -0.4, P < 0.05). No correlations were significant in ASD.” This suggests that increased precuneus activation, although abnormal in this context, was associated with fewer errors. However, the discussion (pg. 242, near bottom, left column) assumes a positive correlation, which would seem to make more sense: “This is further supported by the negative correlation in controls between DLPFC activation and response variability, and by the POSITIVE correlation between premature response errors in ADHD patients and precuneus activation…” [EMPHASIS ADDED]. Would the authors please clarify?

On 2014 Jul 06, Francisco Xavier Castellanos commented:

There seems to be an error in this otherwise excellent paper contrasting boys with Attention-Deficit/Hyperactivity Disorder (ADHD) and Autism Spectrum Disorder (ASD). Near the bottom of page 241, left column, the authors wrote “For ADHD boys, precuneus activation was significantly negatively correlated with premature errors (r = -0.4, P < 0.05). No correlations were significant in ASD.” This suggests that increased precuneus activation, although abnormal in this context, was associated with fewer errors. However, the discussion (pg. 242, near bottom, left column) assumes a positive correlation, which would seem to make more sense: “This is further supported by the negative correlation in controls between DLPFC activation and response variability, and by the POSITIVE correlation between premature response errors in ADHD patients and precuneus activation…” [EMPHASIS ADDED]. Would the authors please clarify?