Information technology acceptance by individual professionals: A model comparison approach

Patrick Y.K. Chau, Paul Jen Hwa Hu

Research output: Journal PublicationArticlepeer-review

945 Citations (Scopus)


The proliferation of innovative and exciting information technology applications that target individual "professionals" has made the examination or re-examination of existing technology acceptance theories and models in a "professional" setting increasingly important. The current research represents a conceptual replication of several previous model comparison studies. The particular models under investigation are the Technology Acceptance Model (TAM), the Theory of Planned Behavior (TPB), and a decomposed TPB model, potentially adequate in the targeted healthcare professional setting. These models are empirically examined and compared, using the responses to a survey on telemedicine technology acceptance collected from more than 400 physicians practicing in public tertiary hospitals in Hong Kong. Results of the study highlight several plausible limitations of TAM and TPB in explaining or predicting technology acceptance by individual professionals. In addition, findings from the study also suggest that instruments that have been developed and repeatedly tested in previous studies involving end users and business managers in ordinary business settings may not be equally valid in a professional setting. Several implications for technology acceptance/adoption research and technology management practices are discussed.

Original languageEnglish
Pages (from-to)699-719
Number of pages21
JournalDecision Sciences
Issue number4
Publication statusPublished - 2001
Externally publishedYes


  • Information technology acceptance
  • Professional users
  • Structural equation models
  • Technology adoption and management

ASJC Scopus subject areas

  • Business, Management and Accounting (all)
  • Strategy and Management
  • Information Systems and Management
  • Management of Technology and Innovation


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