Inductive Reasoning Essay Examples

Dr. Tamara Fudge, Kaplan University professor in the School of Business and IT

There are several ways to present information when writing, including those that employ inductive and deductivereasoning. The difference can be stated simply:

  • Inductive reasoning presents facts and then wraps them up with a conclusion.
  • Deductive reasoning presents a thesis statement and then provides supportive facts or examples.

Which should the writer use? It depends on content, the intended audience, and your overall purpose.

If you want your audience to discover new thingswith you, then inductive writing might make sense.   Here is n example:

My dog Max wants to chase every non-human living creature he sees, whether it is the cats in the house or rabbits and squirrels in the backyard. Sources indicate that this is a behavior typical of Jack Russell terriers. While Max is a mixed breed dog, he is approximately the same size and has many of the typical markings of a Jack Russell. From these facts along with his behaviors, we surmise that Max is indeed at least part Jack Russell terrier.

Within that short paragraph, you learned about Max’s manners and a little about what he might look like, and then the concluding sentence connected these ideas together. This kind of writing often keeps the reader’s attention, as he or she must read all the pieces of the puzzle before they are connected.

Purposes for this kind of writing include creative writing and perhaps some persuasive essays, although much academic work is done in deductive form.

If your audience is not likely going to read the entire written piece, then deductive reasoning might make more sense, as the reader can look for what he or she wants by quickly scanning first sentences of each paragraph. Here is an example:

My backyard is in dire need of cleaning and new landscaping. The Kentucky bluegrass that was planted there five years ago has been all but replaced by Creeping Charlie, a particularly invasive weed. The stone steps leading to the house are in some disrepair, and there are some slats missing from the fence. Perennials were planted three years ago, but the moles and rabbits destroyed many of the bulbs, so we no longer have flowers in the spring.

The reader knows from the very first sentence that the backyard is a mess! This paragraph could have ended with a clarifying conclusion sentence; while it might be considered redundant to do so, the scientific community tends to work through deductive reasoning by providing (1) a premise or argument – which could also be called a thesis statement, (2) then evidence to support the premise, and (3) finally the conclusion.

Purposes for this kind of writing include business letters and project documents, where the client is more likely to skim the work for generalities or to hunt for only the parts that are important to him or her. Again, scientific writing tends to follow this format as well, and research papers greatly benefit from deductive writing.

Whether one method or another is chosen, there are some other important considerations. First, it is important that the facts/evidence be true. Perform research carefully and from appropriate sources; make sure ideas are cited properly. You might need to avoid absolute words such as “always,” “never,” and “only,” because they exclude any anomalies. Try not to write questions: the writer’s job is to provide answers instead. Lastly, avoid quotes in thesis statements or conclusions, because they are not your own words – and thus undermine your authority as the paper writer.

 

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Inductive Argument Examples

Here are several examples of Inductive Arguments.

GENERALIZATION
(The generalization, or the conclusion, proceeds from the specific examples or samples provided.)

There are basketball players from the 1980s who have scored at least 5 points on average.
Therefore, basketball players from the 1980s have scored at least 5 points on average.

Jack and John are guitarists and they feel pain in their fingers after playing 2 hours straight.
Jill is also a guitarist and she feels the same pain after playing the guitar for 2 hours.
Therefore, guitarists feel pain in their fingers after playing 2 hours straight.


STATISTICAL SYLLOGISM
(This for of inductive reasoning proceeds from a generalization to a conclusion about an individual or sample.)

All policemen who are at least 40 years of age have apprehended at least 2 traffic violators.
Thomas is a policeman who is 43 years of age.
Therefore, there is a probability that Thomas has already apprehended at least 2 traffic violators while in service.

No Chemistry professor has allowed his students to have more than 12 absences in class.
Robert teaches Chemistry to a group of third-year college students.
Therefore, Robert has not allowed his students to have more than 12 absences in his class.


SIMPLE INDUCTION
(This method of inductive reasoning proceeds from a premise about a sample group to a conclusion about another individual)

Half of the employees of Gander Publications are given monthly bonuses of $500.
Christopher is an associate editor of Gander Publications.
Therefore, there is a probability that Christopher is given a monthly bonus of $500.

A third of college essays in Trentworth Academy receive B+ for their grade.
Harry submitted his college essay for literature in Trentworth Academy.
Therefore, there is a probability that Harry will receive B+ for his essay.


ARGUMENT FROM ANALOGY
(This form of inductive reasoning relies on the theory that there are shared attributes.)

Thelma is a driving lessons instructor. She is diligent, trustworthy and kind.
Jennifer is also a driving lessons instructor. She is diligent and trustworthy.
Therefore, Jennifer is also kind.

Leonardo is a good writer, a painter, and an athlete.
Ronaldo is a painter and an athlete.
Therefore, Ronaldo is also a good writer.


CAUSAL INFERENCE
(This inductive argument draws a conclusion about a causal connection based on the conditions of the occurrence of an effect.)

Albert always takes an afternoon jog in the city park.
After a few minutes of jogging, he finds himself being chased by dogs.
Therefore, Albert will be chased by dogs if he will jog in the city park.


PREDICTION
(This method of induction draws a conclusion about a future individual from a previous sample.)

In the past ten years, twenty of the fifty firemen in the county have helped save homes from fires.
Therefore, there is a probability that the other thirty of the fifty firemen in the county will help save other homes from fires.

An important point to consider is that the strength of the inductive argument heavily relies on the strength of the individual premises. The likelihood or probability of the premises in an inductive reasoning to be true is not always fixed. Care should be taken when choosing which premises to use in an inductive argument. Read more about inductive arguments.

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