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Table 1 Example items from each psychological construct scale, number of items and response scale, instrument development source(s), and reliability coefficients computed at each assessment point in this study.

From: A test of cognitive mediation in a 12-month physical activity workplace intervention: does it explain behaviour change in women?

Psychological construct Sample item Response scale
(number of items)
Construct source(s)
[reference number]
αT1
αT2
αT3
self-efficacy In the next six months, I am confident that I can participate in regular physical activity:
When I have to do it by myself.
"Not confident at all" to "Extremely confident"
(9 items)
[43, 44] .93
.93
.94
decisional balance pros Over the next 6 months:
Physical activity would help reduce tension or manage stress.
"Not at all" to "Very much"
(5 items)
[43, 44] .85
.83
.85
decisional balance cons Over the next 6 months:
Physical activity would take too much time.
"Not at all" to "Very much"
(6 items)
[43, 44] .77
.75
.78
behavioral processes How often in the past month:
Did you set physical activity goals for yourself that you could reach?
"Never" to "Very often"
(9 items)
[44] .86
.84
.87
experiential processes How often in the past month:
Did warnings about health problems cause concern?
"Never" to "Very often"
(10 items)
[44] .81
.80
.82
severity I feel:
For me, being physically inactive would be a very bad thing.
"Definitely not" to "Definitely yes"
(3 items)
[45, 46] .61
.60
.81
vulnerability I feel:
If I don't get enough physically activity, I would be at risk for serious health problems.
"Definitely not" to "Definitely yes"
(3 items)
[45, 46] .84
.92
.91
fear I feel:
Not getting enough physical activity would frighten me because of the possibility of developing serious health problems.
"Definitely not" to "Definitely yes"
(3 items)
[45, 46] .93
.94
.95
response efficacy I feel:
For me, physical activity will keep me healthy.
"Definitely not" to "Definitely yes"
(3 items)
[45, 46] .83
.78
.91
attitude For me regular physical activity over the next 6 months will be:
"Quite Useful" to "Quite Useless"
Response scale differed for each item (i.e., enjoyable, useful, wise, interesting, relaxing, beneficial) (6 items) [47, 48] .78
.82
.80
injunctive norms Over the next 6 months:
Most people in my social network want me to do regular physical activity.
"Strongly disagree" to "Strongly agree"
(4 items)
[47, 48] .67
.73
.73
descriptive norms Over the next 6 months:
Most of my family members will participate in regular physical activity.
"Strongly disagree" to "Strongly agree"
(4 items)
[47, 48] .55
.61
.63
social support Over the next 6 months:
People in my social network are likely to help me participate in regular physical activity.
"Strongly disagree" to "Strongly agree"
(3 items)
[47, 48] .76
.73
.73
perceived behavioral control Over the next 6 months:
If I were really motivated participating in regular physical activity would be easy.
Response scale differed for each item
(4 items)
[47] .57
.60
.60