In a fictitious study investigating the effects of humor on memory, Schmidt showed participants a list of sentences, half of which were humorous and half were non-humorous. Schmidt found that participants consistently recalled more of the humorous sentences than the non-humorous sentences, demonstrating that the use of humor increased participants’ recall of sentences. Use APA style.This assignment requires that at least four additional scholarly research sources related to this topic, and at least one in-text citation from each source be included.In an essay (500 words), address the following items:Identify the independent variable for this study.Describe the scale of measurement used for the independent variable.Describe the scale of measurement used for the dependent variable.Provide an example of a simple study using Schmidt as a model. State the purpose of the research (Schmidt’s purpose was to examine the effects of humor on memory), the research question (Schmidt’s research question was: What are the effects of humor on memory?), the independent variable, and the dependent variable for your study.