_____ is marked by feelings of great sadness, despair, and hopelessness, as well as the loss of the ability to experience pleasure

For the past two years, Nick has experienced poor appetite, insomnia, fatigue, and several other symptoms. These symptoms have kept him from feeling happy, and yet they do not indicate a major depressive episode. When assessing Nick, what disorder is the

psychologist most likely to consider? a. bipolar I disorder b. dysthymia c. cyclothymia d. seasonal affective disorder

Which of these choices best describes the definition of R-squared?

A. Slope of the regression line B. Percent of Y predicted by X C. The correlation coefficient D. Percent of X predicted by Y