When the qualities that initially attract a person to someone turn out to be factors that drive the couple apart, this is known as a(n) ________

In middle school, grades fall and behavioral problems tend to occur because

A. many teachers mark more harshly. B. all students are involved in sports programs. C. parents avoid school functions. D. adolescents drop out.

Ray, a student in an advanced-level psychology course, was given the following assignment: Compute the correlation between height and weight for 335 students in his class. Ray completed the assignment and found that r = -1.09

What comment might the teacher have written on his paper? a) "Good job, you have demonstrated a strong relationship between height and weight." b) "Please check your calculations because you calculated a correlation coefficient that cannot occur." c) "This assignment was a trick because height and weight cannot be correlated using methods available today." d) "Looks like there is a strong negative relationship between height and weight, which is not likely to occur outside of a college population."