%0 Journal Article %T Triangulation in empirical social research using the example of a study about the effects of barrier-free internet on people with intellectual disabilities %A Tobias Bernasconi %J Empirische Sonderp£żdagogik %D 2009 %I Pabst Science Publishers %X The article describes the concept of triangulation as a strategy of empirical social research. First there is a description of the development and the content of the concept, followed by critics and emerging advantages and disadvantages for practical research.Afterwards the application of a methodical triangulation is exemplified by an already accomplished study. Special features, effectiveness and efficiency of the methodical triangulation are described by the representation of a study which deals with effects and preconditions of accessible web content for people with cognitive disabilities. %K triangulation %K methodical triangulation %K people with cognitive disabilities %K accessibility %U http://www.psychologie-aktuell.com/fileadmin/download/esp/1-2009/bernasconi.pdf