Cannabis Use in Pregnancy Is Linked to Child Anxiety, Hyperactivity (scientificamerican.com)

My experience (I've worked in related fields) is that you should be extremely skeptical of work funded by NIDA, often times the researchers tailor their publications to what they think the grant managers want to hear.

This work was supported by Grants MH102729 from the National Institute of Mental Health (to Y.N.) and DA030359 from the National Institute on Drug Abuse (to Y.L.H.).