In our study, we used a categorization of CEA levels at the statistical median of 26.8 ng/mL for descriptive purposes.
Expression perception was evaluated using a categorization task of prototypical [Ekman and Friesen, 1976] and ambiguous facial expressions from the "morphed-hexagon" stimulus set [Calder et al., 1996].
Thorpe et al. [6] used a categorization task (distinguishing the presence of an animal in a natural scene) to analyze ERPs of the subjects.
We chose to use a categorization based on the work of van Uden-Kraan, et al. [ 14, 26] because they not only described empowerment processes in online forums, but also described positive empowerment outcomes related to these processes.
Considering the scarcity of studies on the effectiveness of backward chaining in aggression-related behaviors, further research could extend these promising findings, including determining whether ongoing maintenance training would extend this effect, and addressing the present study's limitations (e.g., using a refined categorization of aggressive responses).
It is possible that behaviours showing no relationship with SES in this study would show relationships if examined using a different categorization of engagement in risk behaviour.
Our findings of an association of adult SEP with standing balance and chair rise performance and no evidence of an association with grip strength (after adjustment for height), were consistent with previous analyses from the NSHD using a binary categorization of occupational social class (i.e. manual vs non-manual) [ 9].
For example, using an extensive categorization of the biophysical structures of TF DNA-binding domains [ 28, 29], we found that Rap1 and Tec1, having the helix-turn-helix domains, show a preference to bind DNA sequences that are conserved in roll structural property.
In contrast, Rosumek et al. [28] found differences between tropical and temperate systems in measures of both herbivory and reproduction, possibly because they used a dichotomous categorization of latitude (tropical v. temperate) rather than finer-scale categorical or continuous characterization of habitat.
The dizziness presentation type was also categorized using a common categorization scheme because of the differences in potential etiologies relative to the presentation characteristics[ 13].
