suddengains

Identify sudden gains based on the three criteria outlined by Tang and DeRubeis (1999) doi:10.1037/0022-006X.67.6.894 to a selection of repeated measures. Sudden losses, defined as the opposite of sudden gains can also be identified. Two different datasets can be created, one including all sudden gains/losses and one including one selected sudden gain/loss for each case. It can extract scores around sudden gains/losses. It can plot the average change around sudden gains/losses and trajectories of individual cases.