www.psychexamreview.com In this video I describe the positive symptoms of schizophrenia, including delusions, hallucinations, disorganized speech, and abnormal motor behavior, as well as negative symptoms of reduced emotional expression, anhedonia, alogia, avolition, and asociality. I also discuss diagnostic criteria, cognitive factors, neurological correlates, and the role of gender and culture in prevalence. Please note that the symptoms described in this video are not comprehensive and there are other symptoms involved in diagnosis for each of these disorders. Like these videos? Consider supporting Psych Exam Review on Patreon: http://www.patreon.com/PsychExamReview Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email! ... https://www.youtube.com/watch?v=NQAK2ZcsTdM

In this video I answer the common question of why we divide by n-1 when calculating variance from a sample, known as Bessel's Correction. I focus on conceptual understanding of why this adjustment is needed and why n-1 is the appropriate adjustment on average, rather than making up a population and possible samples to illustrate this. I show why x-bar tends to underestimate the squared deviations, then provide 2 arguments for why n-1 adjusts for this; one based on degrees of freedom, and the other based on trying to estimate the average amount of bias of the sample variance. ... https://www.youtube.com/watch?v=ke8nSbXUJjQ

www.psychexamreview.com In this video I introduce language acquisition as a type of learning that isn't explained well by the behaviorist principles we saw in the unit on learning theory. In the next few videos we'll be looking at linguistics and language acquisition in more detail and then considering how language relates to thought. We begin with Noam Chomsky's review of B.F. Skinner's Verbal Behavior, which revealed the limits of the behaviorist approach. Next I introduce Chomsky's idea of a Language Acquisition Device that enables humans to learn language almost automatically when exposed to it. Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email! Check out my psychology guide: Master Introductory Psychology, a low-priced alternative to a traditional textbook: http://amzn.to/2eTqm5s Chomsky's review of Verbal Behavior: http://cogprints.org/1148/1/chomsky.htm ... https://www.youtube.com/watch?v=QAgdPDvMTGU

In this video I introduce several neurotransmitters including acetylcholine, dopamine, GABA, serotonin, and norepinephrine. I also describe some of the functions of each of these neurotransmitters, with the caveat to avoid oversimplifying the role of neurotransmitters in explaining complex behaviors. Don’t forget to subscribe to the channel to see future videos! Have questions or topics you’d like to see covered in a future video? Let me know by commenting or sending me an email! Need more explanation? Check out my full psychology guide: Master Introductory Psychology: http://amzn.to/2eTqm5s Enable closed-captioning or find a full transcript of this video here: http://www.psychexamreview.com/introduction-to-neurotransmitters/ ... https://www.youtube.com/watch?v=42LWpiat98Q