From: The use of research questionnaires with hearing impaired adults: online vs. paper-and-pencil administration
Cronbach’s α
Paper x Internet
Paper
Internet
Correlationa
HHIE
0.92
0.86
IOI-HA
0.82
0.84
SADL
0.76
0.75
0.56
HADS
0.85
0.67