Before participating in this experiment, participants’ TA
was measured using the Dutch trait version of the
STAI.41,47 Participants were asked to indicate to what
extent they are generally experiencing the feelings
described by 20 items on a 4-point response scale ranging
from ‘‘almost never’’ to ‘‘almost always.’’ Ten items are
reverse scored before summing all the individual item
scores to obtain the total score (range, 20–80). Participants’
trait PA was measured using the positive affectivity
scale of the Dutch trait version of the Positive and Negative
Affect Schedule.11,52 Participants are asked to
indicate to what extent, in their normal daily life, they
experience the feelings defined by 20 descriptors using a
5-point response scale ranging from ‘‘very little’’ to
‘‘a lot.’’ Ten items describe positive feelings and assess positive
affectivity (range, 10–50), and 10items describe negative
feelings and assess negative affectivity (range, 10–50).
Before participating in this experiment, participants’ TAwas measured using the Dutch trait version of theSTAI.41,47 Participants were asked to indicate to whatextent they are generally experiencing the feelingsdescribed by 20 items on a 4-point response scale rangingfrom ‘‘almost never’’ to ‘‘almost always.’’ Ten items arereverse scored before summing all the individual itemscores to obtain the total score (range, 20–80). Participants’trait PA was measured using the positive affectivityscale of the Dutch trait version of the Positive and NegativeAffect Schedule.11,52 Participants are asked toindicate to what extent, in their normal daily life, theyexperience the feelings defined by 20 descriptors using a5-point response scale ranging from ‘‘very little’’ to‘‘a lot.’’ Ten items describe positive feelings and assess positiveaffectivity (range, 10–50), and 10items describe negativefeelings and assess negative affectivity (range, 10–50).
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