Then we would say that while force causes acceleration, the ratio f/a does not cause, or explain, mass, even though it does determine it (see the Epilogue of Pearl 2000 for a non-technical attempt at tackling the representation of causal intervention by algebraic notations).
Whilst the interaction and the cell means must still be presented, the main effects may nonetheless be a reasonable representation of the intervention effects, both separately and combined.
Developing the logic model suited the positivist perspective favouring a representation of the intervention as discrete components leading to predefined measurable outcomes.
The "black box" approach offers no assurance that the box contents are a valid representation of the intervention; however, given the number of different treatments and potential diagnoses, complete "unpacking" may prove an insurmountable measurement, analysis, and interpretation challenge.
The interest in phenomenography research is focused on the structural or referential aspects of the experience irrespective of whether it reflects the solution of a problem, the immediate conception, the action or, as in this study, the representation of physiotherapy interventions.
> -wrap-foot> Representatiof of the study intervention.
A representation of a Care Group intervention delivery system is shown in the Figure.
These interventions include a series of limited edition screenprints that provide a visual representation of the proposed interventions.
Collectively, these studies underscore that practical decisions in modeling dictate trade-offs between fitting to limited data and explicit representation of reality, including interventions.
Owing to previous research indicating an increase in postconcussion symptoms reported by females, 24 stratified randomisation will be used to ensure equal representation of gender across the intervention groups.
