Examlex
Short message service (SMS)supports the transmittal of long text messages (up to 360 characters)between mobile phones on a cellular telephone network.
Random Assignment
A method used in experiments to place participants into separate groups using randomization, which helps ensure that each group is similar at the start of the experiment.
Laboratory Experiment
A research method in which variables can be controlled and manipulated in a highly regulated environment to observe the effects on other variables.
Psychological Experiment
An investigation in which a researcher manipulates one or more variables to observe the effect on some behavior or mental process.
Negative Correlation
A relationship between two variables in which one variable increases as the other decreases, indicating an inverse association.
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