<prompt> The fourth dimension of habit as described by Pinkham:DirectionFrequencyIntensityDuration  <response>: Triad of a HabitThe deleterious effects produced by a habit depends upon the three factors Duration, Frequency Intensity. a. Duration: The amount of time spent indulging in the habit. b. Frequency: The number of times the habit is activated in a day. c. Intensity: The vigor with which the habit is performed.Key Concept:Pinkham has added a fourth dimension to oral habits, ie., Direction. 