Given the specifics of the example, an interaction effect would not be surprising. If someone asks you, “Do you prefer ketchup or chocolate sauce on your food?” Undoubtedly, you will respond, “It depends on the type of food!” That’s the “it depends” nature of an interaction effec...
Their example illustrates that considerable multicollinearity is introduced into a regression equation with an interaction term when the variables are not centered. The variance inflation factor should detect the degree of multicollinearity when variables are uncentered (Freund, Little, & Creighton, 2003)...
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So how to test for such a moderation effect? Well, we usually do so in 3 steps: if both predictors are quantitative, we usually mean center them first; we then multiply the centered predictors into an interaction predictor variable; finally, we enter both mean centered predictors and the int...
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As one example, the state of São Paulo set up an HCI lab specifically for testing its e-gov services (Filgueiras, Aquino, Tokairim, Torres, & Barbarian, 2004). One of the grand challenges identified in a 2006 Brazilian Computer Society report was, “participative and universal access to ...
Example #1 – Siren Siren uses many different interaction animations in its app design. The first of which are the elements that move with varying delays to produce something of a ‘wave’ effect when you swipe left or right. This provides additional feedback to the user as to the overall ...
1 for an example of the test set up). To balance the need to protect cats’ wellbeing during sessions, limit the risk to participants of being bitten or scratched, but also encourage ‘naturalistic’ styles of interaction, participants were encouraged to interact with the cat as they normally...
Each figure presents the evolution of positions and prices of two firms in competition (orange: Firm A, blue: Firm B; data for artificial firms comes from a single simulation that serves as an example of a typical behavior). a Left: artificial firms using a profit maximization strategy; ...