The internal validity of web-based studies
نویسنده
چکیده
Honing and Ladinig (2008) make the assertion that while the internal validity of web-based studies may be reduced, this is offset by an increase in external validity possible when experimenters can sample a wider range of participants and experimental settings. In this paper, the issue of internal validity is more closely examined, and it is agued that there is no necessary reason why internal validity of a web-based study should be worse than that of a lab-based one. Errors of measurement or inconsistencies of manipulation will typically balance across conditions of the experiment, and thus need not necessarily threaten the validity of a study’s findings. Submitted 2008 August 2; accepted 2008 August 3.
منابع مشابه
Validity of web-based information as a challenge to health system
Health is one of the most obvious and important issues preoccupied the human mind, as a concern which still is in force. Maintaining health requires health-related information which is found in the informative resources of the relevant area. Web space is considered as a multi-functional and multi-directional sources of information in which the quantity of presented information is increasing...
متن کاملThe Effect of Foot Orthosis on the Vertical Component of the Ground Reaction Force While Walking: A Review Study
Objective: Every person is required to walk and stand for long periods of time during daily activities, especially at work, as a result of which ground reaction force to the parts and joints is very high, and these forces sometimes reach several times the body weight in the foot and the ankle foot can have devastating effects. Various studies have suggested different methods and factors for red...
متن کاملSociological Impact of Using Digital (Web-based) Analyses on Performance Measurement and Optimization of Digital Marketing among Young Managers (Case study: Digital-based Companies in Tehran)
This research aims to study the effect of using digital (web-based) analyses in performance measurement and optimization of digital marketing in digital-based companies in Tehran. The data collection tool was a researcher-made questionnaire. A panel of experts and supervisor were asked to measure the validity of the questionnaire. For reliability analysis of this tool, Cronbach’s alpha test was...
متن کاملPrediction of user's trustworthiness in web-based social networks via text mining
In Social networks, users need a proper estimation of trust in others to be able to initialize reliable relationships. Some trust evaluation mechanisms have been offered, which use direct ratings to calculate or propagate trust values. However, in some web-based social networks where users only have binary relationships, there is no direct rating available. Therefore, a new method is required t...
متن کاملAssessing the Internal Structure of the Ellis Information Retrieval Model in Order to Present the Persian Norm of Web Retrieval Tools
Introduction: Study evaluated the internal structure of Ellis information seeking model in the student community with the aim of presenting the Persian norm. Methods: This is a descriptive-analytical study conducted by cross-sectional survey method in the second semester of the academic year 1399-1400. Population comprise of 280 graduate students at Ahvaz Jundishapur University of Medical Scien...
متن کامل