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Answer each question based only on what was covered in the video lesson. No outside knowledge is needed — all answers come directly from the content presented.
Answer each question using what you learned in the video lesson. Questions increase in difficulty, moving from recall and understanding to application and analysis. Write complete answers in your own words where explanations are asked for.
This lesson explores the science behind mood and related disorders, drawing from Section 15.7 of OpenStax Psychology 2e. Through the real-world cases of Blake, Crystal, and Maria, you'll see how Major Depressive Disorder, Bipolar Disorder, and peripartum onset depression each cross the clinical line from normal mood fluctuation into life-altering impairment. The video unpacks the biological, environmental, and cognitive forces that drive these conditions — from neurotransmitter imbalances and twin-study genetics to depressive schemas and the diathesis-stress model. In this video: • How mood disorders differ from normal mood fluctuations — and the three defining factors: causality, proportion, and impairment • Diagnostic criteria for Major Depressive Disorder, including psychomotor retardation and agitation, and why recurrence rates escalate to 90% after a third episode • Bipolar Disorder vs. unipolar depression: the characteristics of a manic episode including flight of ideas, grandiosity, and reckless behavior like spending sprees • The biological basis: twin-study concordance rates, serotonin/norepinephrine imbalances, elevated amygdala activity, and reduced prefrontal cortex function • The diathesis-stress model and the 5-HTTLPR gene study showing how childhood maltreatment combined with a short gene variant dramatically spikes adult depression risk • Cognitive contributors: Beck's depressive schemas, Hopelessness Theory's stable/global attributions, and the rumination cycle that prolongs depressive episodes • The springtime suicide peak, the 14x contagion effect of celebrity suicide media coverage, and crisis resources including 988 and the Crisis Text Line (741741) #OpenStax #Psychology #MoodDisorders #MentalHealth #Depression OpenStax Content adapted from "OpenStax Psychology 2e", by OpenStax licensed under CC BY 4.0. Content based on Web Version: Apr 23, 2026. Read the textbook online https://openstax.org/details/books/psychology-2e Music first girl talking to me. by ikkun (ex. Barradeen) | https://soundcloud.com/ikkunwastaken Royalty Free Music by https://www.free-stock-music.com Creative Commons / Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) https://creativecommons.org/licenses/by-sa/3.0/deed.en_US
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