Gray [27, 28] also described the behavioral activation system (BAS) as a regulatory system measuring positive affect and approach behavior towards signals of reward.
To measure positive affect we used the 11-item Positive Emotionality Scale (PEM).
To measure positive affect we used the 11-item Positive Emotionality Scale [ 51].
While affectivity has typically been measured in terms of NA, it is also possible to measure positive affect (PA).
Within the MH scale, items measuring positive affect (MH3 and MH5) had lower means than items measuring negative affect (MH1, MH2 and MH4).
17 The underlying structure of the CES-D consists of four dimensions of depression: seven items measure depressed affect, four items measure positive affect, two items measure interpersonal difficulties and seven items measure somatic symptoms.
This subcomponent of the CES-D has been shown to be a valid instrument for measuring positive affect, 39 40 41 and it has been taken as interchangeable with the concept of happiness.
*items 1,2,4,6,8,10,11,14,17 measure negative affect, the remaining items measure positive affect Table 4 shows the overall OHIP-14 scale had a mean ± SD of 3.55 ± 4.50, with subscales ranging from 0.29 ± 0.64 for functional limitation to 0.94 ± 0.93 for pain/discomfort, with higher scores indicating a greater number of impacts on quality of life.
Facing these problems, attempts have been made to develop direct observational methods [ 3] measuring positive affects such as pleasure, interest, and contentment as well as negative affects such as sadness, anxiety/fear, and anger according to operationalized criteria during a series of 10-minutes direct observation.
