| The focus of this validation study is to develop and use Global Positioning System (GPS) technology as a tool for psychological research. GPS technology was used to estimate the number of places participants visited over a four day period. To test the convergent validity of this method, this estimate was compared to two self-report methods of measuring the same behavior over the same time frame. All three of these methods were significantly correlated with each other. Results of the split-plot GLM further validated the convergent validity of the GPS method. The test of construct validity was successful when it comes to covitality, however, negative affect did not predict NPV. |