Attitudes towards the Advertisement (Five-Point Semantic Differential Scale) (AAD)
AAD1	Like the ad (1 = I dislike the ad—5 = I like the ad)	Originally Holbrook and Batra Adapted from Ranganathan and Henley
AAD2	Favorable (1 = I react unfavorably to the ad—5 = I react favorably to the ad)
AAD3	Positive (1 = I feel negative toward the ad—5 = I feel positive toward the ad)
AAD4	Advertisement is good (1 = The ad is bad—5 = The ad is good)
AAD5	Information (1 = The ad is uninformative—5 = informative)
Emotional Arousal (DES)
Positive Emotions (DESPositive)
DESPOS1	I felt glad, happy, joyful.	Galanakis,
DESPOS2	I felt interested, alert, curious.
DESPOS3	I felt inspired, uplifted, elevated.
Negative Emotions (DESNegative)
DESNEG1	I felt scared, fearful, afraid.	Galanakis,
DESNEG2	I felt disgust, distaste, revulsion.
DESNEG3	I felt contemptuous, scornful, disdainful.
Blood Donation Anxiety (BDA)
BDA1	In the future if I donate blood, I would feel nervous	Robinson 2009 and Chen 2022
BDA2	In the future if I donate blood, I would feel distressed
BDA3	In the future if I donate blood, I would feel anxious
Attitudes (ATT)
ATT1	For me, voluntary blood donation, (1 = unsatisfying—5 = satisfying)
ATT2	For me, voluntary blood donation, (1 = pointless—5 = worthwhile)
ATT3	For me, voluntary blood donation, (1 = unrewarding—5 = rewarding)
ATT4	For me, voluntary blood donation, (1 = stressful—5 = relaxing)
Behavioral Intention to Donate Blood (BI)
BI1	I intend to donate blood in the next 3 months
BI2	I will donate blood in the next 3 months
BI3	I would like to donate in the next 3 months