1.2.2. Day one and two procedure
Upon arrival on day one, participants provided written
informed consent and completed individual difference measures,
which included a measure assessing prior experience
with meditation or mind-body practices and a 15-item unidimensional
measure of dispositional mindfulness (see Section
1.4) (Brown and Ryan, 2003). Participants were then
instructed and guided through their assigned training program
(delivered using prerecorded audio files via PC computer
and headphones) (see Section 1.3). During each day’s
training exercise, participants were probed on how attentive
they were to task instructions (see Section 1.4). To enable
experimenter blinding to study condition, the experimenter
launched audio files labeled as ‘‘1’’ or ‘‘2’’ followed by the
session number on a PC computer. Participants completed
their training in a laboratory room. The experimenter monitored
participants from an adjacent room during the training
to ensure that participants were engaged (e.g., not sleeping)
during the trainings. If participants appeared to be off-task,
the experimenter re-entered the room to remind participants
to actively participate in the training. Each audio
training session was 25 min, after which participants completed
a brief questionnaire assessing their reactions to the
training exercise (see Section 1.4). This training protocol was
repeated on day two.
1.2.2. Day one and two procedure
Upon arrival on day one, participants provided written
informed consent and completed individual difference measures,
which included a measure assessing prior experience
with meditation or mind-body practices and a 15-item unidimensional
measure of dispositional mindfulness (see Section
1.4) (Brown and Ryan, 2003). Participants were then
instructed and guided through their assigned training program
(delivered using prerecorded audio files via PC computer
and headphones) (see Section 1.3). During each day’s
training exercise, participants were probed on how attentive
they were to task instructions (see Section 1.4). To enable
experimenter blinding to study condition, the experimenter
launched audio files labeled as ‘‘1’’ or ‘‘2’’ followed by the
session number on a PC computer. Participants completed
their training in a laboratory room. The experimenter monitored
participants from an adjacent room during the training
to ensure that participants were engaged (e.g., not sleeping)
during the trainings. If participants appeared to be off-task,
the experimenter re-entered the room to remind participants
to actively participate in the training. Each audio
training session was 25 min, after which participants completed
a brief questionnaire assessing their reactions to the
training exercise (see Section 1.4). This training protocol was
repeated on day two.
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