Use of natural language to represent behaviour-change theories has resulted in lack of clarity and consistency, hindering com-parison, integration, development and use. This paper describes development of a formal system for representing behaviour-change theories that aims to improve clarity and consistency. A given theory is represented in terms of (1) its component constructs (for example, ‘self-efficacy’, ‘perceived threat’ or ‘subjective norm’), which are labelled and defined, and (2) rela-tionships between pairs of constructs, which may be causal, structural or semantic. This formalism appears adequate to rep-resent five commonly used theories (health belief model, information–motivation–behavioural skill model, social cognitive theory, theory of planned behaviour and the trans-theoretical model).
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Here is our current list of the top 10 application-design mistakes that are both egregious and commonplace.
Data viz - "I'll pause for a moment so you can let this information sink in."
Effective visualizations communicate complex statistical and quantitative information facilitating insight, understanding, and decision making. But what is an effective graph? This cheat sheet provides general guidance and points to consider.
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Over 900 images of HIV/AIDS UK graphics & campaigns now uploaded
How do the photos used by development organisations affect perceptions of international development? How do agencies ensure that images preserve their subjects’ dignity? Has social media created new opportunities for self-representation, or just reinforced the use of outdated visual clichés? These are some of the questions addressed during last week’s #DevPix Twitter chat hosted by the Overseas Development Institute. The topic sparked a lively conversation…
data - info-knowledge-insight-wisdom
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