A Framework of Applied Quantitative Methods in Business for Uzbekistan


Gestion 2000

novembre-décembre 1996, vol. 6

Départements : Information Systems and Operations Management, GREGHEC (CNRS)

An Experimental Investigation of the Cognitive Processing Effort Involved in Direct Manipulation Interfaces


ACM Transactions on Computer-Human Interaction

mars 1996, vol. 3, n°1, pp.1-37

Départements : Information Systems and Operations Management, GREGHEC (CNRS)

Norman proposed a model describing the sequence of user activities involved in human-computer interaction. Through this model, Norman provides a rationale for why direct-manipulation interfaces may be preferred to other design alternatives. Based on action identification theory we developed several hypotheses about the operations of Norman's model and tested them in a laboratory experiment. The results show that users of a direct-manipulation interface and a menu-based interface did not differ in the total amount of time used to perform a task. However, with the direct-manipulation interface, more time is devoted to performing motor actions, but this is offset by shorter nonmotor time. Furthermore, there are significant interactions between task familiarity, instructions, and the type of interface, indicating that Norman's model may not hold under all conditions

Consumer Reactions to Electronic Shopping on the World Wide Web


International Journal of Electronic Commerce

hiver 1996, vol. 1, n°2, pp.56-88

Départements : Information Systems and Operations Management, GREGHEC (CNRS)

Mots clés : attitudes and intentions to shop on the Internet, consumer perceptions, electronic retailing, Internet consumer behavior, marketing on the World Wide Web, retail patronage in on-line stores

Much fascination and speculation surrounds the impact of the World Wide Web on consumer shopping behavior. At the same time, there is little empirical evidence underlying all this speculation. This article provides one such data set. It reports on factors that consumers found salient as they browsed through selected electronic malls on the World Wide Web. We gathered consumers' reactions via an open-ended survey using a sample of 220 shoppers. We related the reactions to the factors of product perceptions, shopping experience, customer service, and perceived consumer risk, which we had identified from the existing literature on retail patronage behavior. This study translated these factors to the World Wide Web context and explored their relative salience. With respect to product perceptions, consumers were impressed by the breadth of stores on the World Wide Web but disappointed with the depth of a merchant's offerings. The shopping experience was reported to be generally enjoyable, but at the same time frustrating. Consumers also reported that they could perceive the potential for time savings and reduced effort compared with traditional forms of shopping, but that, at present, goal-directed shopping was difficult. Nearly everyone in the sample had something negative to say about customer service on the World Wide Web, judging that the sites were not designed to be responsive to their needs and that the presentation of goods and services seemed intangible. Risk was cited as a barrier to shopping on the World Wide Web, but was not as salient to our sample as product perceptions, shopping experience, and customer service. Overall, the results suggest that World Wide Web merchants need to think more about how they perform on the factors known to affect consumer behavior; namely, product perceptions, shopping experience, and customer service. We offer advice for enhancing the design of World Wide Web retail sites

Discounted costs, obsolescence and planned stockouts with EOQ formula


International Journal of Production Economics

1996, vol. 44, pp.255-265

Départements : Information Systems and Operations Management, GREGHEC (CNRS)

L'externalisation du développement d'applications informatiques : concepts et analyse des déterminants


Systèmes d'Information et Management

septembre 1996, n°3, pp.3-28

Départements : Information Systems and Operations Management

Revolutionizing Internal Communication in Decentralized Organizations


CEMS Business Review

1996, vol. 1, n°1-2, pp.27-35

Départements : Information Systems and Operations Management

The Effects of Decision Support and Task Contingencies on Model Formulation: A Cognitive Perspective


Decision Support Systems

aout 1996, vol. 17, n°4, pp.241-252

Départements : Information Systems and Operations Management, GREGHEC (CNRS)

Mots clés : model formulation, decision support systems, cognitive cost-benefit approach, behavioral decision making

This paper takes a cognitive cost-benefit approach to understanding model formulation. Work in the behavioral decision literature on the role of effort and accuracy in choice tasks indicates that effort, or cognitive cost, is a key factor in understanding decision behavior. However, the model formulation literature does not discuss how effort interacts with other factors, such as task complexity and decision aids, to influence model formulation. In this paper, based on the work on the cost-benefit theories of cognition, we posit that two types of effort, namely that associated with building or formulating a model and that associated with utilizing that model in the solution of a problem, will influence model formulation. We then examine how the methods used in the behavioral decision making literature and the reported findings concerning the interaction of effort with task and decision aids can be utilized to understand model formulation