What's the difference beteween Rationale or objective?

Answer 1

Rationale:

The rationale for a study is based on the writer's belief in the need for additional or completely new research on a unique problem in a given field. The rationale should explain, defend, and/or prove that the current literature (if any) and current findings (if any) on the given problem are inadequate, outdated, and/or inaccurate. Basically, the rationale should identify the student's reasoning and justification for writing a dissertation or thesis on the particular subject.

Introduction:

The Introduction should identify the topic and explain why it is important. It must be adequately informative, yet easy to follow. It should state the problem as simply as possible, taking into account the broader view of the discipline as a whole.

The student should not overestimate the reader's familiarity with the topic. The Introduction will be read by those who are somewhat acquainted with the general area, but not all readers will be specialists in the particular topic. The student should write in an intelligent, logical, concise manner, but the Introduction should be presented in such a way that one who knows little of the literature or particular topic will gain a solid understanding of the dissertation's purpose and subject matter.

The Introduction must be interesting, as well. If the reader becomes bored while reading the first section of the dissertation or thesis, he or she is unlikely to regain interest in the following sections. In fact, the reader may stop reading altogether! To prevent such disaster, tradition permits prose in the first few paragraphs that is less dry than the formal, scientific or literary norm.

From swarajya infosys

Answer 2

The rationale explains the reasoning or justification behind a decision or action, while the objective defines the specific goal or outcome that is intended to be achieved. The rationale provides context and reasoning, while the objective sets a clear target for the desired result.