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Table 2 Scale reliability

From: Extending the theory of planned behavior to predict and nudge toward the subscription to a public transport ticket

Variable

Item

Corrected item-total correlation

Cronbach’s α

Attitude

AT1

.767

.923

AT2

.839

AT3

.833

AT4

.784

AT5

.809

Subjective norm

SN1

.834

.916

SN2

.829

SN3

.839

SN4

.551

SN5

.715

SN6

.827

SN7

.602

Perceived behavioral control

PBC1

.810

.908

PBC2

.749

PBC3

.839

PBC4

.785

PBC5a

.250

Environmental concern

EC1

.767

.865

EC2

.671

EC3

.655

EC4

.682

EC5

.698

EC6a

.485

  1. aDeleted due to low item-to-total correlation. Cronbach’s α reported without these