Operationalization of Latent Variables: Decision Support, Task Support, Interface Satisfaction



Decision Support Satisfaction

D7

This Web site improves the quality of my purchasing decision. making.

Sanders (1984)

D8

Use of this Web site enables me to make better purchasing decisions.

Sanders (1984)

D9

This Web site assists me in making a decision more effectively.

Davis (1989)

D10

Use of this Web site enables me to set my priorities in making the purchase decision.

Sanders (1984)

Task Support Satisfaction

T7

I could come to rely on this Web site in performing my task.

Sanders (1984)

T9

Using this Web site enables me to accomplish tasks more quickly.

Davis (1989)

T10

This Web site makes it easier to do my task.

Davis (1989)

Interface Satisfaction

I1

This Web site contains understandable graphics.

Adapted from Lederer et al (2000)

I5

Learning to use this Web site was easy for me.

Davis (1989)

I8

This Web site is user-friendly.

Davis (1989), Doll & Torkzadeh (1988), Goodhue (1990)

I9

This Web site is easy to use.

Davis (1989), Doll & Torkzadeh (1988), Goodhue (1990)

I13

It would be easy for me to become skillful at using this Web site.

Davis (1989)

I16

This Web site is easy to navigate.

Lederer et al (2000)

 

 

Operationalization of Latent Variables: Behavioral Intention to Use, Shopping Enjoyment

Behavioral Intent to Use

 

U2

The use of this Web site would be critical in my future decisions.

Adapted from Franz & Robey (1986)

 

U5

I intend to increase my use of this Web site in the future.

Agarwal & Prasad (1999)

 

U6

In the future, I plan to use this Web site often.

Adapted from Moon & Kim (2001)

 

Shopping Enjoyment

 

P4

I found this Web site interesting.

Ghani, et al. (1991)

 

P5

I found my Web site visit enjoyable.

Ghani, et al. (1991)

 

P6

I found my Web site visit exciting.

Ghani, et al. (1991)

 

P7

I found my Web site visit fun.

Ghani, et al. (1991)

 

 

 

 

 

 

 

Operationalization of Latent Variable: Trust

Trust

TR1

I would be comfortable dealing with this retailer having responsibility for the delivery of the product.

Adapted from Mayer & Davis (1999)

TR2

I would be comfortable dealing with this retailer, even if I could not monitor its actions.

Adapted from Mayer & Davis (1999)

TR3

This retailer is trustworthy.

Jarvenpaa et al. (2000)

TR4

This retailer wants to be known as one who keeps promises and commitments.

Jarvenpaa et al. (2000)

TR5

I trust that this retailer keeps my interests in mind.

Jarvenpaa et al. (2000)

TR6

This retailer’s behavior meets my expectations.

Jarvenpaa et al. (2000)

 

 

Table 3. Descriptive Statistics on Web Skills

 

Web Use/Skills Information

N

Minimum

Maximum

Mean

Std. Deviation

G6. I am very skilled at using the Web

188

1

7

5.74

1.333

G7. I know how to find what I want on the web

188

1

7

5.88

1.309

G8. I know more about using the web than most users

188

1

7

5.26

1.336

 

 

Measures, Loadings, and Weights

Decision Support Satisfaction

Task Support Satisfaction

Interface Satisfaction

BI to use EC Web site

Item

Loadings

Weight

Item

Loadings

Weight

Item

Loadings

Weight

Item

Loadings

Weight

D7

0.8984

0.2818

T7

0.8510

0.3550

I1

0.7904

0.1749

U2

0.8953

0.3563

D8

0.9246

0.2819

T9

0.9020

0.3674

I5

0.8392

0.1784

U5

0.9432

0.3724

D9

0.9096

0.2965

T10

0.9228

0.3973

I8

0.8622

0.2174

U6

0.9254

0.3568

D10

0.8686

0.2534

 

 

 

I92

0.8965

0.2050

 

 

 

 

 

 

 

 

 

I13

0.8774

0.1997

 

 

 

 

 

 

 

 

 

I16

0.8645

0.1936

 

 

 

Shopping Enjoyment

Web Skills

Product Involvement

Trust

 

 

 

 

 

 

 

 

 

 

 

 

P4

0.8828

0.2778

G6

0.9568

0.3736

PI3

0.8920

0.4707

TR1

0.8709

0.1717

P5

0.9274

0.2800

G7

0.9382

0.3929

PI4

0.9389

0.6179

TR2

0.8584

0.1929

P6

0.9214

0.2637

G8

0.8753

0.3130

 

 

 

TR3

0.9230

0.1859

P7

0.9294

0.2722

 

 

 

 

 

 

TR4

0.8772

0.1526

 

 

 

 

 

 

 

 

 

TR5

0.9134

0.2104

 

 

 

 

 

 

 

 

 

TR6

0.9161

0.2054

Note: Items were not included if either: (1) loadings are less than 0.7 and (2) bivariate correlations are higher than .60.

 

Composite Reliability (CR) and Average Variance Extracted (AVE)

Constructs

CR

AVE

Formula

Decision Support Satisfaction

0.9449

0.8109

 

CR = (∑λi)2 / [(∑λi)2 + ∑ivar(Єi)]

AVE = ∑λi2 / [∑λi2 + ∑ivar(Єi)]

Task Support Satisfaction

0.9214

0.7965

Interface Satisfaction

0.9425

0.7322

Shopping Enjoyment

0.9539

0.8377

Web Skills

0.9460

0.8539

Product Involvement

0.9121

0.8384

Trust

0.9596

0.7984

Behavioral Intention to Use EC Web site

0.9441

0.8492

*Note: λi is the component loading to an indicator and var(Єi) = 1 – λi2

 

 

 

 

 

Correlations of latent variables

                

DSS

IFS

TSS

SE

WSKL

PI

TR

BI

Decision Support Satisfaction

(0.901)

 

 

 

 

 

 

 

Interface Satisfaction

0.628

(0.856)

 

 

 

 

 

 

Task Support Satisfaction

0.699

0.604

(0.892)

 

 

 

 

 

Shopping Enjoyment

0.522

0.458

0.613

(0.915)

 

 

 

 

Web Skills

0.107

0.226

0.057

0.119

(0.924)

 

 

 

Product Involvement

-0.039

-0.075

-0.029

-0.074

-0.123

(0.915)

 

 

Trust

0.421

0.459

0.400

0.429

0.217

-0.129

(0.894)

 

Behavioral Intention to use

0.532

0.422

0.680

0.668

0.007

-0.031

0.402

(0.922)

*Note: the number in parenthesis is the square root of AVE .

 

 

 

 

Figure 4. Path Coefficients: Integrated Model of Web Information System Success

 

 

 

 

 

 

 

 

 

 

 

 

 


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