An assumption is an unexamined belief: what we think without realizing we think it. Our inferences also called conclusions are often based on assumptions that we haven't thought about critically. A critical thinker, however, is attentive to these assumptions because they are sometimes incorrect or misguided. Just because we assume something is true doesn't mean it is. Think carefully about your assumptions when finding and analyzing information but also think carefully about the assumptions of others.
Research Paper - Limitations, Delimitations and Assumptions by Tammy Ferrante
Assumptions in a thesis are things that your readers will generally accept as either true or plausible, such as the assumption of honest responses from study participants. One of the first and most important tasks when writing a thesis is to decide what assumptions your readers are likely to have. Research is built on assumptions, which is why they are so important and necessary for your study to be valid and credible. The research problem itself cannot exist without assumptions because those assumptions directly influence what kind of inferences you can reasonably draw from your research. A structured thesis is the roadmap for a structured paper. Your thesis statement should clearly present the central argument, and outline the structure that the rest of the paper will follow.
An assumption is an unexamined belief: what we think without realizing we think it. A critical thinker, however, is attentive to these assumptions because they are sometimes incorrect or misguided. They stop you from taking responsibility for your life. Assumptions allow you to hide behind your version of the story. You prefer to blame others for your misfortune, rather than look in the mirror.
Limitations are those elements over which the researcher has no control. In most instances, any assumption you make becomes a limitation. Delimitations are those elements the researcher CAN control see the limitations and delimitations page for more information. An assumption is an unexamined belief: what we think without realizing we think it.