Lecture 10: User Acceptance
Instructor: Dr. Najla Al-Nabhan
2014
The Concept Of User Acceptance
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user acceptance is defined as the motivation of a user group
to employ information technology for the tasks it is designed
to support.
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Why User acceptance is Important ?
Lack of user acceptance is a significant impediment to the
success of new information systems.
Users are often unwilling to use information systems which, if
used, would result in impressive performance gains
Therefore, user acceptance has been viewed as the pivotal
factor in determining the success or failure of any information
system project.
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Factors Affecting the Success of
new technologies
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Attitudes (Motivation)
Satisfaction
Usage
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several new variables, including:
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compatibility,
user characteristics,
system rating
Technology Acceptance Model (TAM) Theory
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TAM is an information systems theory that models how
users come to accept and use a technology.
The model suggests that when users are presented with a
new technology, a number of factors influence their
decision about how and when they will use it, notably:
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Perceived usefulness (PU) - This was defined by Fred Davis as
"the degree to which a person believes that using a particular
system would enhance his or her job performance".
Perceived ease-of-use (PEOU) - Davis defined this as "the
degree to which a person believes that using a particular system
would be free from effort“.
Technology Acceptance Model (TAM)
The Theory of Reasoned Action (TRA) and Its
Derivatives in User Acceptance
- defines relationships between beliefs, attitudes, norms,
intentions, and behavior.
The Theory
- an individual's behavior (e.g., use or rejection of
technology) is determined by one's intention to perform
the behavior, and this intention is influenced jointly by the
individual's attitude and subjective norm, defined as "the
person's perception that most people who are important
to him (sic) think he should or should not perform the
behavior in question"
Theory of Planned Behavior
- While the Theory of Reasoned Action (TRA) has been
the most widely used theory for examining user
acceptance, other theoretical perspectives have also been
used.
- The Theory of Planned Behavior (TPB) is a descendant
of TRA and adds a third antecedent of intention,
perceived behavioral control, to the TRA model.
- Perceived behavioral control is determined by the
availability of skills, resources, and opportunities, as well as
the perceived importance of those skills, resources, and
opportunities to achieve outcomes.
Theory of Planned Behavior
End of Lectures
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Good luck in Final Exam