Construct, Internal, and External Validity Essay

762 Words 4 Pages
Construct validity has to do with establishing correct operational measures for the concepts being studied (Yin 2009, p. 40). Yin (2009), writes that researchers can improve construct validity construct validity can be if multiple sources of data is employed (triangulation of data), establishing chain of evidence, and reviewing the report with their informants (p. 41). In making sure that one can draw a meaning and useful inferences from scores on particular instruments of data collection and to demonstrate the accuracy of their findings, Creswell (2013) also advice the use of member checking and triangulating data (p. 201). Quarm (2009) and Sarquah (2008) both used several data sources (interviews, documents, media, and internet) in …show more content…
Construct validity has to do with establishing correct operational measures for the concepts being studied (Yin 2009, p. 40). Yin (2009), writes that researchers can improve construct validity construct validity can be if multiple sources of data is employed (triangulation of data), establishing chain of evidence, and reviewing the report with their informants (p. 41). In making sure that one can draw a meaning and useful inferences from scores on particular instruments of data collection and to demonstrate the accuracy of their findings, Creswell (2013) also advice the use of member checking and triangulating data (p. 201). Quarm (2009) and Sarquah (2008) both used several data sources (interviews, documents, media, and internet) in their studies. The triangulation of data sources in their studies allow for several evidence to be collected on their cases under study, concepts or variables were clearly and precisely explained and operationalized. This prevented inaccuracies and ambiguities during the field study and allowed for large volume of data to be collected and used by both inquirers. But both argued that due to time and financial constraints, they could not review the data collected with key informants to correct any mistake, inaccuracies, clarifications which to some extent threatened the validity of their studies.

8.2 Internal Validity
This refers to establishing a causal relationship, whereby certain conditions are shown to lead to other conditions (Yin, 2009,