Heike's Older Brother Has Suffered from Chronic Depression for Several

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Heike's older brother has suffered from chronic depression for several years.Unfortunately,Heike has been incorrectly informed by her parents that there is a 40 percent chance she will also suffer from depression.Explain how the availability heuristic,framing,confirmation bias,and belief perseverance might lead Heike to conclude that she will definitely be a victim of a severe depressive disorder.