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6 Written questions

6 Multiple choice questions

  1. a mental grouping of similar objects, events, ideas, or people
  2. a testable prediction used to see how something works or to solve a problem
  3. changes together in predictable consistent fashion
  4. refers to surface attributes that can be easily quantified, objectivity-precision, generalizing
  5. characteristics; qualities of a person or thing
  6. Many people have trouble remembering which is the independent variable and which is the dependent variable. An easy way to remember is to insert the names of the two variables you are using in this sentence in they way that makes the most sense. Then you can figure out which is the independent variable and which is the dependent variable: (Independent variable) causes a change in (Dependent Variable) and it isn't possible that (Dependent Variable) could cause a change in (Independent Variable).

6 True/False questions

  1. variable(Time Spent Studying) causes a change in (Test Score) and it isn't possible that (Test Score) could cause a change in (Time Spent Studying). We see that "Time Spent Studying" must be the independent variable and "Test Score" must be the dependent variable because the sentence doesn't make sense the other way around.


  2. Independent variablechanges as a result of independent variable


  3. Exampleor example, a mediating variable explains the actual relationship between the following variables. Most people will agree that older drivers (up to a certain point), are better drivers. Thus: aging \to better driving But what is missing from this relationship is a mediating variable that is actually causing the improvement in driving: wisdom. The mediated relationship would look like the following: aging \to increased wisdom \to better driving (And yes, it could also be argued that instead of increased wisdom it is increased responsibility for one's actions, but separating those two is difficult to do.) Mediating variables are often contrasted with moderating variables, which pinpoint the conditions under which an independent variable exerts its effects on a dependent variable. A moderating relationship can be thought of as an interaction. It occurs when the relationship between variables A and B depends on the level of C. In fact, the best explanation of the above relationship is a combination of mediating and moderating variables. Increased age does often lead to increased wisdom, but it also requires the maintenance of good reflexes. Thus, there is an interaction between age and reflexes that serves as a moderating variable. Increasing age only improves driving until reflexes begin to suffer, at which point the moderator variable (age x reflexes) results in worse driving. Or: aging \to increased wisdom \to better driving \to worse driving (until) aging \to decline in reflexes


  4. What's a dependent variable?An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable. Other factors (such as what they eat, how much they go to school, how much television they watch) aren't going to change a person's age. In fact, when you are looking for some kind of relationship between variables you are trying to see if the independent variable causes some kind of change in the other variables, or dependent variables


  5. Quantitative Inquirycharacteristics; qualities of a person or thing


  6. Moderating VariablesA moderating variable is one that has an effect on the dependent variable, but is not related to or affected by the independent variable. Often times, as your text illustrates a moderating variable may be a categorical variable in which only one of the categories has an effect on the dependent variable such as gender, marital status or socioeconomic status. In other words the moderating variable effects the dependent variable, but it's effect is not influenced or Independent Variable Mediating Variable Dependent Variable caused by the independent variable.


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