The October 2012 issue of the American Psychological Association’s Monitor on Psychology includes an interview with developmental psychologist, Jerome Kagan. In this interview he talks about psychology’s research “ghosts,” referring to the dubious generalizations psychologist’s make from their often-limited research. Kagan’s primary point is that “it’s absolutely necessary to gather more than one source of data, no matter what you’re studying,” and that these multiple sources of data should come from verbal and behavioral as well as physiological measures. Only by combining these various perspectives on an issue or situation – that is, utilizing data taken in different contexts and by way of alternative methods and modes – can the researcher come to a legitimate conclusion.
This is not unlike triangulation, esp., in the social and health sciences, which is used to gauge the trustworthiness of research outcomes. Triangulation is the technique of examining a specific research topic by comparing data obtained from: two or more methods, two or more segments of the sample population, and/or two or more investigators. In this way, the researcher is looking for patterns of convergence and divergence in the data. Triangulation is a particularly important design feature in qualitative research – where measures of validity and transferability can be elusive – because it furthers the researcher’s ability to gain a comprehensive view of the research question and come closer to a plausible interpretation of final results.
Scholars teach the importance of including some form of triangulation in research designs yet there is not a lot of evidence that this occurs in the real world of applied qualitative research. While there are an increasing number of ways to gather qualitative feedback – particularly via social media and mobile – that provide researchers with convenient sources of data, applied researchers would benefit from more discussion on case studies that have utilized multiple data sources and methods to find reliable themes in the outcomes. Importantly, it is further hoped that applied researchers use this contrast-and-compare approach to scrutinize the research issue from both traditional (e.g., in-person group discussions, in-depth interviews, in-home ethnography) and newer (e.g., online based, mobile device) information-gathering strategies.
The triangulation concept is just one way that researchers can add rigor to their research designs and manage the potential “ghosts” of groundless assumptions and misguided interpretations.