University of Illinois Urbana-Champaign · FACULTY OF BIOLOGY

IB 110 Chap.5 Reading Research Papers and the Scientific Method

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Chapter 5 of 10 · IB 110

Reading Research Papers and the Scientific Method

The scientific method as a loop

The fourth lecture describes science as an ongoing process. It begins with observations, drawn from experience, thought or reading, and moves through questions, hypotheses about general causes, testable predictions and the gathering of data.

Hypotheses are then refined, altered, expanded or rejected, and the cycle builds toward general theories that must be consistent with most or all of the available data and with other current theories.

Relevant data can come from the published literature, fresh observations or designed experiments, and thorough testing requires replication.

Where the researcher shows up

A lecture question asks where the identity of a researcher can affect the scientific process.

The loop gives natural answers: in what the researcher notices, in which questions seem worth asking, in how a study is designed, and in who is invited to take part. None of these makes science subjective, but each is a place to look when a result seems to leave some people out.

Why papers are hard to read

The second discussion points out that research articles are written for specialists, not for the public.

They are dense because they are compressed, and they are not meant to be read from start to finish.

Each section answers a different question: the introduction explains why the work was done, the methods explain how, the results report what was found, and the discussion explains why it matters.

A reading order that saves time

The recommended order is title and authors, then the abstract, then the figures, then the results and discussion. By that point you know whether the paper answers your question.

Only then is it worth working through the methods and the introduction. The discussion also reminds students to apply the CRAAP test before investing the time.

The practice paper

The discussion activity used a 2021 study of coastal grizzly bears in British Columbia, carried out jointly by First Nations and conservation scientists.

It found three distinct bear groups whose boundaries matched Indigenous language families better than landscape features did, and argued that official management units split a continuous population. It is a clear example of biology and culture read together.

Reading a figure before the text

When you reach the figures, read the axes and the caption before the pattern.

Ask what each point or bar stands for, what the comparison is, and whether the scale starts at zero. A figure that answers your question in thirty seconds is the strongest sign that the rest of the paper deserves your time.

In this chapter

What this chapter covers

  • 01

    Observation and questions

  • 02

    Hypotheses and predictions

  • 03

    Gathering data and replication

  • 04

    Refining toward general theory

  • 05

    Where researcher identity enters

  • 06

    Why papers feel dense

  • 07

    Introduction, methods, results and discussion

  • 08

    A time-saving reading order

Worked example · free

Turn an observation into a testable prediction

Q [6 marks]. AskSia-authored practice. You notice that a school near a highway reports more student absences for breathing problems than a school in a park. Write a hypothesis, a prediction and the data you would gather. The marks shown are an AskSia study allocation, not a University marking scheme.
Figure 5.1.Figure 5.1. The ongoing cycle from the fourth lecture. Each stage feeds the next, and a rejected hypothesis sends the work back around.ObserveAsk a questionHypothesisePredictGather dataRefine or rejectGeneral theoryreplicationkeeps it turning
Figure 5.1. The ongoing cycle from the fourth lecture. Each stage feeds the next, and a rejected hypothesis sends the work back around.
  • 2State a hypothesis about a cause.
  • 2Write an if-then prediction.
  • 2Name the data and a check for other causes.
Hypothesis: traffic-related air pollution near the highway worsens respiratory health in students. Prediction: if this is true, absences for breathing problems should be higher at schools closer to major roads, and should fall on days with lower traffic or after air filters are installed. Data: absence records by cause for several schools at different distances from highways, with local air quality readings. Check other causes by comparing schools with similar family incomes, since income could also affect health and school choice.
Sia tip — Write the prediction as if-then, and make it something a record or a measurement could contradict.
Glossary

Key terms

Hypothesis
A proposed general cause for an observed pattern, stated so that it can be tested.
Replication
Repeating a study to check that its results hold, which the lecture ties to thorough testing.
Abstract
The short summary at the start of a paper, stating the question, methods, main results and significance.
Methods Section
The part of a paper that explains how the research question was answered.
FAQ

Reading Research Papers and the Scientific Method FAQ

Do I have to read a research paper from beginning to end?

No. The discussion recommends reading the title, abstract, figures and results or discussion first, to decide whether the paper is useful, and only then working through the methods and introduction.

What does each section of a research paper tell me?

The introduction gives the why, the methods the how, the results the what, and the discussion the so what: the significance and how the findings fit with other knowledge.

How can a researcher's identity affect science?

Through what they observe, which questions they pursue, how they design a study and whom they recruit. Awareness of these points helps readers spot findings that may not apply to everyone.

Study strategy

Exam move

Take one paper cited in a lecture and summarise it in four lines labelled why, how, what and so what. Then write one question about the methods you would want answered before trusting it.

Working through Reading Research Papers and the Scientific Method in IB 110? Sia is AskSia’s AI Biology tutor — ask any IB 110 Reading Research Papers and the Scientific Method question and get a clear, step-by-step explanation grounded in how IB 110 is taught and assessed. Read this chapter free, then take your hardest questions to Sia.

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