Research Variables, CARS Model and Citation

An independent variable is the factor that researchers manipulate or change in an experiment to observe its effect on another variable, known as the dependent variable. By altering the independent variable, researchers can determine if it causes any changes in the dependent variable, thereby establishing a cause-and-effect relationship. This is fundamental in experimental design, as it allows for the testing of hypotheses and the exploration of how different factors influence outcomes.

In research, a dependent variable is the outcome or response that researchers measure to assess the effect of an independent variable. It is considered dependent because its value is influenced by changes in the independent variable. For example, in an experiment studying the impact of study time on test scores, the test scores are the dependent variable, as they depend on the amount of time spent studying. This relationship helps researchers understand cause-and-effect dynamics within their studies.

A mediating variable serves as a mechanism that clarifies the relationship between the independent and dependent variables. It illustrates how or why an independent variable influences a dependent variable by accounting for the process or pathway through which this effect occurs. By identifying and understanding the mediating variable, researchers can gain deeper insights into the dynamics of the relationship, revealing the underlying factors that facilitate or hinder the impact of the independent variable on the dependent variable.

CARS, developed by John Swales in 1990, stands for "Creating A Research Space." This model outlines a framework for writing research introductions, emphasizing the importance of establishing a context for the research, identifying gaps in existing literature, and justifying the need for the new study. By effectively creating a research space, authors can position their work within the broader academic discourse, making it relevant and necessary for readers. This approach enhances the clarity and purpose of the research, guiding readers through the significance of the study being presented.

Establishing a niche involves pinpointing a specific area within the broader research territory that has not been adequately explored or addressed. This step is crucial as it highlights the unique contribution the researcher aims to make, differentiating their work from existing studies. By identifying the research gap, scholars can justify the significance of their study and outline how it will advance knowledge in the field, ultimately guiding their research focus and objectives.

In APA in-text citation, when the author's name is incorporated into the narrative of the text itself, it is referred to as integral citation. This method emphasizes the author’s contribution to the discussion, making it clear who is being referenced without relying solely on parenthetical citations. For example, stating "Smith (2020) argues that..." highlights the author's role in the argument, enhancing the flow of the writing and providing context for the reader.

In APA style, when citing a source with two authors in a non-integral format, the correct format includes an ampersand (&) between the authors' last names and is enclosed in parentheses. The year of publication follows the authors' names, also within the parentheses. This format is used when the citation appears at the end of a sentence rather than as part of the narrative. Thus, "(Santos & Dela Cruz, 2022)" accurately follows these guidelines.

An extraneous variable can introduce noise or bias into an experiment, potentially confounding the results. While researchers focus on independent and dependent variables, extraneous variables can influence the dependent variable, leading to inaccurate conclusions. Identifying and controlling for these variables is crucial to ensure the validity of the research findings. Hence, understanding that extraneous variables exist and can impact outcomes is essential for rigorous scientific inquiry.

The population gap strategy focuses on identifying and studying a specific group of individuals that has been overlooked in previous research. By targeting this unexamined demographic, researchers can uncover unique insights, experiences, and needs that contribute to a more comprehensive understanding of the topic. This approach helps to fill existing voids in literature and ensures that diverse perspectives are represented, ultimately enriching the field of study.