Constructing theories means introducing concepts which are not directly observable. They should, however, explain empirical findings and thus have to be related to observations. Hence, it is useful ...

Research Methods in Psychology is a standard required course in pretty much any psychology major. In our department at SUNY New Paltz, this is a four-credit class with a large laboratory component.

Does watering a plant more help it grow? How often you water every day (assuming the same amount) is independent and how much it grows (or dies) is dependant on what you are doing with the water.

Several models for limited dependent variables (variables having a non-negligible probability of exactly equaling zero) are examined. Estimation in and discrimination among the various models are ...