Thought organization (also known as fluid intelligence  ) is a state of mind in which one's ability to analyze and categorize conceptual information using a systematic and logical thought process is considerably increased.    It seemingly occurs through reducing thoughts which are unrelated or irrelevant to the topic at hand, therefore improving one's capacity for a structured and cohesive thought stream.   This effect also seems to allow the person to hold a greater amount of relevant information (as evidenced by language comprehension increases  ) in their train of thought which can be useful for extended mental calculations, articulating ideas, and analyzing logical arguments.
Thought organization is often accompanied by other coinciding effects such as analysis enhancement and thought connectivity. It is most commonly induced under the influence of mild dosages of stimulant and nootropic compounds, such as amphetamine, methylphenidate, and Noopept. However, this effect can occur to a lesser extent under the influence of certain cannabis strains and spontaneously during psychedelic states. It is also worth noting that the same compounds which induce this mind state at light to moderate dosages can often result in the opposite effect of thought disorganization at heavier dosages.   
- Diamond, A. (2013). Executive functions. Annual review of psychology, 64, 135-168. | https://dx.doi.org/10.1146%2Fannurev-psych-113011-143750
-  Biederman, J., Seidman, L. J., Petty, C. R., Fried, R., Doyle, A. E., Cohen, D. R., ... & Faraone, S. V. (2008). Effects of stimulant medication on neuropsychological functioning in young adults with attention-deficit/hyperactivity disorder. The Journal of clinical psychiatry, 69(7), 1150-1156. | http://dx.doi.org/10.4088/JCP.v69n0715
-  Hellwig-Brida, S., Daseking, M., Keller, F., Petermann, F., & Goldbeck, L. (2011). Effects of methylphenidate on intelligence and attention components in boys with attention-deficit/hyperactivity disorder. Journal of Child and Adolescent Psychopharmacology, 21(3), 245-253. | https://doi.org/10.1089/cap.2010.0041
- Lundqvist, T. (2005). Cognitive consequences of cannabis use: comparison with abuse of stimulants and heroin with regard to attention, memory and executive functions. Pharmacology Biochemistry and Behavior, 81(2), 319-330. | https://doi.org/10.1016/j.pbb.2005.02.017