Full video here: https://youtu.be/dg1SYOJ8IBY In this video I explain why we want to estimate the parameters of the population. This is an essential part of estimating the probability of different scores, and the probability of different samples. By knowing about the population we can start to estimate the likelihood of getting samples that differ. This will be a key part of trying to understand differences between samples, and whether those differences are due to random chance rather than a manipulation or intervention of some kind. #shorts #psychology #statistics #statisticsforpsychology #PsychExamReview ... https://www.youtube.com/watch?v=U0JPi7fK7a4

www.psychexamreview.com In this video I describe how group opinions and decisions can differ from those of the individuals who make up the group. Group polarization refers to the tendency of groups to become more extreme and more polarized than the original views of members. Groups also tend to be more tolerant of risk, known as risky shift. Polarization can still occur when groups are exposed to inconclusive evidence, strengthening views of supporting ideas and dismissing contradictory evidence. Groups may make poor decisions as a result of groupthink, a term coined by Irving Janis to refer to characteristics of some groups that increase conformity, encourage a sense of invulnerability, and disparage opposition. Like these videos? Consider supporting Psych Exam Review on Patreon: 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! Need more explanation? Get volume 1 of my Master Introductory Psychology series here: http://amzn.to/2ENc44U ... https://www.youtube.com/watch?v=Q48cY_R6ER4