ISRI - Information Systems Research Indicators

Construct: Ease of Use

Description
Indicators

Note 1: Following are presented the definitions found for the construct in the used references, together with the theory/model.
Note 2: The same construct can be present in more than one theory/model.
Note 3: If the construct was not proposed in the original theory/model, it is identified as "Additional to theory/model".

Definition: The degree to which using a particular system is free of effort.

Theory/model: IDT TRA
Reference: (Karahanna, Straub, & Chervany, 1999)

Definition: Not defined.

Theory/model: Additional to TTF
Reference: (Kositanurit, Ngwenyama, & Osei-Bryson, 2006)

Definition: The degree to which it is perceived as being simple to understand and use.

Theory/model: Additional to IDT
Reference: (Parthasarathy & Bhattacherjee, 1998)

Definition: simple to understand and use

Theory/model: Additional to DTPB
Reference: (Taylor & Todd, 1995b)

Definition: Belief regarding the degree of ease associated with the system’s use.

Theory/model: IDT TRA
Reference: (Van Slyke, Ilie, Lou, & Stafford, 2007)

Definition: Not defined.

Theory/model: Additional to TRA
Reference: (Wixom & Todd, 2005)

Note 1: This list contains all the indicators (measuring variables) as defined by the authors when proposing/using/applying a theory/model in a context. It also includes the scales used to measure the variables.
Note 2: Some of the indicators are context-dependent.
Note 3: The same construct can be present in more than one theory/model.

Indicator	Scale	Context	Theory/Model	Reference(s)
Instructions for using equipment in the CRC will be hard to follow.	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

Instructions that are hard to follow are: (bad/good).	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

It will be difficult to learn how to use the CRC.	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

A service that is difficult to learn is: (bad/good).	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

It will be easy to operate the equipment in the CRC.	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

A service with equipment that is easy to operate is: (bad/good).	Scale 0 to 7	Computing Resource Center (CRC)	DTPB	(Taylor & Todd, 1995c)

At the time I subscribed, I felt this online service would be hard to learn.	Likert 1-7	Online Services	IDT	(Parthasarathy & Bhattacherjee, 1998)

At the time I subscribed, I felt this online service would be quite complicated to master.	Likert 1-7	Online Services	IDT	(Parthasarathy & Bhattacherjee, 1998)

At the time I subscribed, I felt this online service would be difficult to use.	Likert 1-7	Online Services	IDT	(Parthasarathy & Bhattacherjee, 1998)

At the time I subscribed, I felt this online service would have a complex, hard-to-learn system.	Likert 1-7	Online Services	IDT	(Parthasarathy & Bhattacherjee, 1998)

It is easy to learn how to use the ERP system.	Likert 1-7, Strongly Disagree to Agree	Enterprise Resource Planning (ERP)	TTF	(Kositanurit, Ngwenyama, & Osei-Bryson, 2006)

The ERP system I use is convenient and easy to use.	Likert 1-7, Strongly Disagree to Agree	Enterprise Resource Planning (ERP)	TTF	(Kositanurit, Ngwenyama, & Osei-Bryson, 2006)

The description of the functions/ commands displayed on screen is clear to me.	Likert 1-7, Strongly Disagree to Agree	Enterprise Resource Planning (ERP)	TTF	(Kositanurit, Ngwenyama, & Osei-Bryson, 2006)

The function/command names of the ERP are easy to remember.	Likert 1-7, Strongly Disagree to Agree	Enterprise Resource Planning (ERP)	TTF	(Kositanurit, Ngwenyama, & Osei-Bryson, 2006)

_____ is easy to use.	Likert 1-7, Strongly Disagree to Agree	Data Warehousing Predefined Reporting Software	TRA	(Wixom & Todd, 2005)

It is easy to get _____ to do what I want it to do.	Likert 1-7, Strongly Disagree to Agree	Data Warehousing Predefined Reporting Software	TRA	(Wixom & Todd, 2005)

_____ is easy to operate.	Likert 1-7, Strongly Disagree to Agree	Data Warehousing Predefined Reporting Software	TRA	(Wixom & Todd, 2005)

Learning to operate Windows would be easy for me.	Scale 1 to 7	Microsoft's Windows 3.1 software package	TRA	(Karahanna, Straub, & Chervany, 1999)

If I were to adopt Windows, it would be easy to use.	Scale 1 to 7	Microsoft's Windows 3.1 software package	TRA	(Karahanna, Straub, & Chervany, 1999)

If I were to adopt Windows, it would be difficult to use.	Scale 1 to 7	Microsoft's Windows 3.1 software package	TRA	(Karahanna, Straub, & Chervany, 1999)

I believe that it is easy to get IM to do what I want to do.	Likert 1-7, Strongly Disagree to Agree	Instant messaging (IM) systems	TRA	(Van Slyke, Ilie, Lou, & Stafford, 2007)

Learning to operate IM is easy for me.	Likert 1-7, Strongly Disagree to Agree	Instant messaging (IM) systems	TRA	(Van Slyke, Ilie, Lou, & Stafford, 2007)

Overall I believe that IM is easy for me to use.	Likert 1-7, Strongly Disagree to Agree	Instant messaging (IM) systems	TRA	(Van Slyke, Ilie, Lou, & Stafford, 2007)