Several reports and studies have manipulated the effect of the plants composing this mixture.
When both plate stiffness (inverse compliance) and vibration amplitude were manipulated, the effect persisted, with both factors contributing to compliance perception.
We manipulated the effect size of the G × E effect into no effect (a1 = 0), a small effect (a1 = 0.5), a medium effect (a1 = 0.75), and a large effect (a1 = 1.0).
I was so close to the action that I had to stand aside to let a phalanx of Valkyries push past and was hovering at the assistant stage manager's shoulder as she summoned the cast, cued the lighting changes and manipulated the stage effects ("I think we're a little light on smoke").
As a consequence, in order to test the learning capacities of this cerebellar model to compute the inverse dynamics of gravity torques, we manipulated the gravitational effects applied to the arm through three experimental sessions during which various initial positions, movement amplitudes and directions were combined during vertical arm pointing movements.
We manipulated the interfering effect of a distractor by presenting no irrelevant stimuli (no-distractor), non-semantic irrelevant stimuli (letter-distractor), and semantic irrelevant stimuli (word-distractor).
When syntactic variables are manipulated, the main ERP effects are anterior negativities and posterior positivities.
In an online lab, investigation material, physical or virtual, is manipulated, and the effects of this manipulation are observed in order to gain insight into the relationship between variables in the conceptual model underlying the online lab (de Jong, et al., [2013]).
What is most important is the sound, and all the occult equipment for creating and manipulating the sound effects.
Simulation has the advantage of known true parameter values, as well as presenting the possibility of manipulating the total effect of the covariate and the magnitude of the difference between the within-cluster and contextual effects.
