ISRI - Information Systems Research Indicators

Context: e-Commerce

Note: This list contains all the constructs (and corresponding measuring variables) as defined by the authors when proposing/using/applying the theories/models in the selected context. It also includes the scales used to measure the variables.

Construct (Theory/Model): Information Quality (DM)

Indicator	Scale	Reference(s)
The e-commerce system provides the precise information you need.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The information content meets your needs.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
You feel the output is reliable.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system provides up-to-date information.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): Service Quality (DM)

Indicator	Scale	Reference(s)
When you have a problem, the e-commerce system service shows a sincere interest in solving it.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system service is always willing to help you.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
You feel safe in your transactions with the e-commerce system service in terms of security and privacy protection.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system service has the knowledge to answer your questions.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system service gives you individual attention.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system service understands your specific needs.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): System Quality (DM)

Indicator	Scale	Reference(s)
The e-commerce system is user friendly.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system is easy to use.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): User Satisfaction (DM)

Indicator	Scale	Reference(s)
You are satisfied with this e-commerce system.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system is of high quality.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The e-commerce system has met your expectations.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): Intention to Reuse (DM)

Indicator	Scale	Reference(s)
Assuming that you have access to the e-commerce system, you intend to reuse it.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
You will reuse the e-commerce system in the future.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
You will frequently use the e-commerce system in the future.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): Perceived Value (DM)

Indicator	Scale	Reference(s)
The product/service of the e-commerce system is a good value for money.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The price of the product/service of the e-commerce system is acceptable.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)
The product/service of the e-commerce system is considered to be a good buy.	Likert 1-7, Strongly Disagree to Agree	(Wang, 2008)

Construct (Theory/Model): Attitude toward Getting Information (TPB)

Indicator	Scale	Reference(s)
For me, getting information about this product from this website within the next 30 days would be.	Scale 1 to 7, Very Bad to Good Idea	(Pavlou & Fygenson, 2006)
For me, getting information about this product from this website within the next 30 days would be.	Scale 1 to 7, Very Foolish to Wise	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Controllability over Getting Information (TPB)

Indicator	Scale	Reference(s)
All necessary resources for getting information about this product from this website will be accessible to me within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Getting information about this product from this website within the next 30 days is completely under my control.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Download Delay (TPB)

Indicator	Scale	Reference(s)
I expect the speed by which this website would provide information to be fast enough.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
The speed by which a website provides information would make it (much more difficult/easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
I expect the rate at which the information would be displayed on this website to be fast enough.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
A fast rate at which websites display information would make it (much more difficult/easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Getting Information (TPB)

Indicator	Scale	Reference(s)
During the last 30 days, I got information about this product from this website.	Yes or No

Construct (Theory/Model): Getting Information Habit (TPB)

Indicator	Scale	Reference(s)
Getting product information from this vendor’s website has become a habit for me.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Getting product information from this website has become natural for me.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Getting Information Skills (TPB)

Indicator	Scale	Reference(s)
If I wanted to, I could become skillful at comparing and evaluating products on this website.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Becoming skillful would make it (much more difficult/easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
If I wanted to, I could easily become knowledgeable about getting all relevant information about products from this website.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Becoming knowledgeable about getting information would make it (much more difficult/easier) for me to get all relevant information about this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Intentions to Get Information (TPB)

Indicator	Scale	Reference(s)
I intend to get information about this product from this website within the next 30 days.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
I plan to get information about this product from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Monetary Resources (TPB)

Indicator	Scale	Reference(s)
I expect to have the money needed to purchase this product from this Web vendor within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Having the money needed to purchase products would make it (much more difficult/easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
It would be within my budget to purchase this product from this Web vendor within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Being within my budget would make it (much more difficult/ easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Past Experience – Getting Information (TPB)

Indicator	Scale	Reference(s)
How long have you been using the Internet for getting information about products? ____ years.	Direct Answer	(Pavlou & Fygenson, 2006)
During the last 30 days, how much time did you spend on the Internet getting product information in general? ____ hours.	Direct Answer	(Pavlou & Fygenson, 2006)
During the last year, how many times have you made product purchases from the selected Web vendor? _____ times.	Direct Answer	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Past Experience – Purchasing (TPB)

Indicator	Scale	Reference(s)
During the last year, how many times have you made product purchases from the Internet in general? ____times.	Direct Answer	(Pavlou & Fygenson, 2006)
During the last year, how much have you approximately spent on Internet purchases? $ ____.	Direct Answer
During the last year, how many times have you made product purchases from the selected Web vendor? ____ times.	Direct Answer	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Behavioral Control over Getting Information (TPB)

Indicator	Scale	Reference(s)
Please rate the difficulty of you getting information about this product from this website within the next 30 days.	Scale 1 to 7, Extremely Difficult to Easy	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Behavioral Control over Purchasing (TPB)

Indicator	Scale	Reference(s)
Please rate the difficulty of you purchasing this product from this Web vendor within the next 30 days.	Scale 1 to 7, Extremely Difficult to Easy	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Diagnosticity (TPB)

Indicator	Scale	Reference(s)
I expect this website to help me get a real feel for this product.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Being able to get a real feel for a product would make it (much more difficult/ easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
I expect this website to help me carefully evaluate this product.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Being able to carefully evaluate a product would make it (much more difficult/easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Ease of Getting Information (TPB)

Indicator	Scale	Reference(s)
Getting information about this product from this website would be easy.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting product information easily from a website is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
Learning how to get information about this product from this website would be easy.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, learning how to get product information easily from a website is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Ease of Purchasing (TPB)

Indicator	Scale	Reference(s)
Purchasing this product from this website would be easy.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, purchasing products easily from a Web vendor is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
Learning how to purchase this product from this Web vendor would be easy.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
For me, learning how to purchase products easily from a Web vendor is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Information Protection (TPB)

Indicator	Scale	Reference(s)
I expect my personal information to be adequately protected when I purchase this product from this Web vendor.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
An adequate protection of my personal information would make it (much more difficult/easier) for me to purchase this product from this vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
I feel secure that my personal information is kept private when I purchase this product from this Web vendor.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Feeling secure that personal information is kept private would make it (much more difficult/easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Purchasing Usefulness (TPB)

Indicator	Scale	Reference(s)
This website would be useful in purchasing this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, a website that is useful in purchasing products is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
This website would enhance my effectiveness in purchasing this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, a website that enhances my effectiveness in purchasing products is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Perceived Usefulness of Getting Information (TPB)

Indicator	Scale	Reference(s)
This website would be useful for getting valuable information about this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting valuable information about a product from a website is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
This website would enhance my effectiveness in getting useful information about this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting useful information about a product from a website is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Product Value (TPB)

Indicator	Scale	Reference(s)
Purchasing this product from this Web vendor would save me money within the next 30 days: (Extremely unlikely/likely).	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, saving money within the next 30 days is: (Not at all /Extremely important).	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
I would purchase this product from this Web vendor at a bargain price within the next 30 days.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting products at bargain prices within the next 30 days is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing (TPB)

Indicator	Scale	Reference(s)
During the last 30 days, I purchased this product from this Web vendor.	Yes or No	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Attitude (TPB)

Indicator	Scale	Reference(s)
For me, purchasing this product from this Web vendor within the next 30 days would be.	Scale 1 to 7, Very Bad to Good Idea	(Pavlou & Fygenson, 2006)
For me, purchasing this product from this Web vendor within the next 30 days would be.	Scale 1 to 7, Very Undesirable to Desirable	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Controllability (TPB)

Indicator	Scale	Reference(s)
All necessary resources for purchasing this product from this Web vendor will be accessible to me within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Purchasing this product from this Web vendor will be completely under my control within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Habit (TPB)

Indicator	Scale	Reference(s)
Getting product information from this vendor’s website has become a habit for me.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Getting product information from this website has become natural for me.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Intentions (TPB)

Indicator	Scale	Reference(s)
I intend to purchase this product from this website within the next 30 days.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
I plan to purchase this product from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Self-Efficacy (TPB)

Indicator	Scale	Reference(s)
If I wanted to, I would be able to purchase this product from this Web vendor within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
If I wanted to, I am confident I could purchase this product from this Web vendor within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Skills (TPB)

Indicator	Scale	Reference(s)
If I wanted to, I could become skillful at making good product purchasing decisions on the Web.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Becoming skillful at making good purchasing decisions on the Web would make it (much more difficult/easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
If I wanted to, I could easily become knowledgeable about purchasing products on the Web.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Becoming knowledgeable about Web purchasing would make it (much more difficult/easier) for me to purchase this product from this Web vendor.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Purchasing Subjective Norm (TPB)

Indicator	Scale	Reference(s)
Most people who are important to me think that it is fine to purchase a product from this Web vendor within the next 30 days.	Scale 1 to 7, Not at All to Completely True	(Pavlou & Fygenson, 2006)
Most people who are important to me would purchase this product from this Web vendor.	Scale 1 to 7, Not at All to Completely True	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Self-Efficacy over Getting Information (TPB)

Indicator	Scale	Reference(s)
If I wanted to, I would be able to get information about this product from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
If I wanted to, I am confident I could get information about this product from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Subjective Norm on Getting Information (TPB)

Indicator	Scale	Reference(s)
Most people who are important to me think it is a good idea to get information about this product from this website.	Scale 1 to 7, Not at All to Completely True	(Pavlou & Fygenson, 2006)
Most people who are important to me would get information about this product from this website.	Scale 1 to 7, Not at All to Completely True	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Time Resources (TPB)

Indicator	Scale	Reference(s)
I expect to have the time needed to get information from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Having the time needed would make it (much more difficult/easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
There would always be time for me to get information from this website within the next 30 days.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Finding time would make it (much more difficult/easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Trust – Getting Information (TPB)

Indicator	Scale	Reference(s)
This Web vendor would be competent in providing objective information about this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting objective product information from a website is: (Not at all/Extremely important).	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
This Web vendor would be honest in providing accurate information about this product.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, getting accurate product information from a website is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Trust – Purchasing (TPB)

Indicator	Scale	Reference(s)
This Web vendor would be competent in delivering this product in a timely fashion.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, product delivery in a timely fashion is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
This Web vendor would be honest in its dealings when I purchase this product from it.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, a Web vendor that is honest in its dealings with its customers is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)
This Web vendor would not seek to take advantage of me if I purchase this product from it.	Scale 1 to 7, Extremely Unlikely to Likely	(Pavlou & Fygenson, 2006)
For me, a Web vendor that does not seek to take advantage of its customers is.	Scale 1 to 7, Not at All to Extremely important	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Web Vendor Reputation (TPB)

Indicator	Scale	Reference(s)
This Web vendor has a good reputation in the marketplace.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)

Construct (Theory/Model): Website Navigability (TPB)

Indicator	Scale	Reference(s)
I expect the sequencing of hyperlinks in this website to be clear.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
Having a clear sequence of hyperlinks would make it (much more difficult/ easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)
I expect the layout of this website to be intuitive.	Scale 1 to 7, Strongly Disagree to Agree	(Pavlou & Fygenson, 2006)
A website with an intuitive layout would make it (much more difficult/ easier) for me to get information about this product.	Scale 1 to 7, Much More Difficult to Easier	(Pavlou & Fygenson, 2006)