Typical case sampling is a type of purposeful sampling used in qualitative research in which, "subjects are selected who are likely to behave as most of their counterparts would".
Using this type of purposeful sampling strategy allowed for the identification of shared common experiences of the phenomena, core concepts and central themes that "cut across cases and derive their significance from having emerged out of heterogeneity".
From the surveys a matrix was developed to identify cases for purposeful sampling [ 35].
Negative case analyses the purposeful exploration of 'instances that do not fit the emerging model' (ref. 24, p.174 were used to further test and explore the emerging theory.
Negative case analyses the purposeful exploration of 'instances that do not fit the emerging' [ 22, p.174]. were used to further test and explore the emerging findings.
Phylogenetic analyses have also been used as admissible evidence in criminal court cases involving the determination of purposeful viral transmission.
Some of these case studies are purposeful application of ecological engineering principles; others happened or are happening naturally through self-design.
All the found objects have a kind of inherent power, either through their sheer bulk and heft, or, as in the case of the jet engine, a purposeful, potent former life.
Patton [ 45] states that "the logic and power of purposeful sampling lies in selecting information-rich cases for study in depth.
The goal of purposeful sampling is to select participants who provide "information-rich" cases, that is, participants who provide data that will allow us to learn in-depth about the phenomenon of interest [ 10].
Therefore, it must be concluded that this was not a case of accidental contamination, but that OSCS was intentionally added to the raw heparin product as an act of purposeful adulteration.
