Effects on the emotions.
In comparison to placebo, CBD improved emotional facial affect recognition at 60% emotional intensity; THC was detrimental to the recognition of ambiguous faces of 40% intensity. So, users perceptions of faces and emotions exhibited on those faces was reduced. I would guess this explains why users don’t get have intense highs and lows and have a steady temperament. The 60s flower children were on to something! Make love not war! 🙂
https://www.ncbi.nlm.nih.gov/pubmed/25534187