In this lesson, students build on the understandings developed in Lessons 1 and 2 and draw conclusions based on literary elements. Students will: 1  draw conclusions based on information within a text, including determining the theme of a text.
What is seasonal affective disorder (SAD)? Seasonal affective disorder, or SAD, is a type of depression that occurs during the same season each year. You may have SAD if you felt depressed during the last two winters but felt much better in spring and summer. Some people may have SAD during the summer months. Anyone can get SAD, but it's more common in:
Many things, including brain chemicals, ions in the air, and genetics seem to be involved. But researchers agree that people who suffer from winter depression -- also known as  seasonal affective disorder , a term that produces the cute acronym SAD -- have one thing in common.They're particularly sensitive to light, or the lack of it.any things, including brain chemicals, ions in the air, and genetics seem to be involved. But researchers agree that people who suffer from winter depression -- also known as  seasonal affective disorder , a term that produces the cute acronym SAD -- have one thing in common.