AP Research Assessment Instructions | Top 200 Vocabulary Words

The 200-word examination instruction list

AP Research asks you to justify a method, explain findings and defend decisions. Start by making the link between question, evidence and method clear. State what the findings support within the scope of the study.

Start with the list or jump to assessment requirements, worked examples, the Fencing Method or practice. The list combines command words and subject terms that help you understand the task.

Essential instructions

No.	Instruction or term	Meaning or action
1	Identify	Name or pick out the item the question specifies.
2	State	Express the required point directly and clearly.
3	Describe	Report the relevant characteristics, events or pattern.
4	Explain	Connect the result to its cause, mechanism or reasoning.
5	Compare	Set the items side by side on the same relevant feature.
6	Interpret	Say what a statement, result or display means in context.
7	Justify	Give evidence for the claim and explain how that evidence supports, qualifies or defends it.
8	Evaluate	Weigh relevant evidence or criteria before reaching a judgment.
9	Determine	Work from the given information to establish an answer.
10	Select	Choose only the number of options requested.
11	Check	Test the answer against the original instruction or condition.
12	Analyze	Break the information into relevant parts and explain how they relate.
13	Stimulus	Use the figure, extract or other material attached to the question.
14	Answer each subpart	Treat each lettered instruction as a separate job.
15	Distinguish	Give the feature that lets the reader tell two things apart.
16	Infer	Use clues to reach a conclusion the material implies.
17	Support	Supply evidence that helps establish the claim.
18	Evidence	A fact, detail or observation that supports a claim.
19	Claim	An assertion that can be tested against evidence or reasoning.
20	Context	The surrounding information that helps determine meaning.

Subject and assessment vocabulary

No.	Instruction or term	Meaning or action
21	Academic paper	Present the research question, context, method, findings, analysis and implications in a sustained scholarly account.
22	Presentation and oral defense	Explain and defend the research process and conclusions to an evaluation panel.
23	Research question	Specify a focused, answerable inquiry with a manageable scope.
24	Research gap	Identify a meaningful question, population, setting or relationship that existing work leaves insufficiently addressed.
25	Literature review	Synthesize scholarship to situate the question and justify the inquiry.
26	Conceptual framework	Show how key concepts and their proposed relationships guide the study.
27	Theoretical framework	Apply an existing theory to shape the inquiry and interpretation.
28	Research design	Explain the overall structure linking the research question to data collection and analysis.
29	Methodological rationale	Explain why the chosen approach fits the question and available evidence.
30	Method	The specific procedure for collecting or analysing evidence.
31	Methodology	The reasoning and principles behind the research approach.
32	Quantitative method	Collect or analyse numerical data for the specified purpose.
33	Qualitative method	Collect or analyse nonnumeric evidence to examine meaning, experience or context.
34	Mixed methods	Combine quantitative and qualitative approaches and explain how their results connect.
35	Content analysis	Apply a systematic coding scheme to a collection of texts, images or other material.
36	Thematic analysis	Identify and interpret patterned meanings in qualitative data.
37	Coding scheme	A set of rules or categories for labelling features of evidence.
38	Codebook	A document that defines categories and how to apply them.
39	Unit of analysis	The entity or case about which the study draws conclusions.
40	Unit of observation	The item or entity on which a measurement or observation is recorded.
41	Sampling frame	The accessible list or population source from which a sample is drawn.
42	Inclusion criterion	A rule that determines which cases qualify for analysis.
43	Exclusion criterion	A rule that determines which cases are left out.
44	Purposive sampling	Select cases because they have characteristics relevant to the inquiry.
45	Recruitment procedure	Explain how prospective participants were approached or selected.
46	Pilot study	Run a small preliminary trial to check instruments or procedures.
47	Research instrument	A tool for collecting data, such as a questionnaire, interview guide or coding form.
48	Operational definition	State the procedure used to observe, manipulate or measure the construct.
49	Inter-rater agreement	Compare how consistently independent coders classify the same evidence.
50	Triangulation	Use multiple sources, methods or perspectives to examine the same question.
51	Reflexivity	Examine how the researcher’s role or assumptions may shape the inquiry.
52	Data management	Describe how records are organised, stored and protected.
53	Informed consent	Explain the process by which participants voluntarily agree after receiving relevant information.
54	Confidentiality	Protect identifiable information from unauthorised disclosure.
55	Anonymisation	Remove or transform identifying information to prevent reasonable re-identification.
56	Ethical review	Follow applicable school and course procedures for checking risks and safeguards before research.
57	Research process documentation	Keep dated records of decisions, procedures, changes and reflection.
58	Protocol deviation	Explain a departure from the planned procedure and its possible effects.
59	Missing data	Describe absent observations and explain how the analysis handles them.
60	Data exclusion	Explain which data were removed and the rule used to remove them.
61	Descriptive finding	Report an observed pattern before interpreting its implications.
62	Unexpected result	Describe a result that differed from expectations and consider plausible explanations.
63	Transferability	Consider whether findings from one setting may be informative in another, given their context.
64	Generalizability	Judge how far findings may extend beyond the sample or setting studied.
65	Delimitation	A boundary deliberately set by the researcher to keep the inquiry focused.
66	Limitation	A constraint on what the method or evidence can establish.
67	Null finding	A result that does not show the expected association or effect under the study conditions.
68	Interpretation of findings	Explain how the results answer the question and relate to existing evidence.
69	Practical implication	Describe a possible use of the findings, with suitable limits.
70	Future research	Propose a follow-up that responds to a specific gap or limitation.
71	Defend a methodological choice	Explain why the chosen method suited the question and acknowledge what an alternative would change.
72	Academic conversation	Situate the investigation among earlier findings and disagreements.
73	Contribution to knowledge	State what the study adds within its defined scope.
74	Presentation of results	Select a visual or summary that makes a key finding understandable.
75	Distinguish results from discussion	Report the findings first and explain their meaning and limitations in the discussion.

Research methods and evidence

No.	Instruction or term	Meaning or action
76	Hypothesis	State a testable prediction about a relationship.
77	Independent variable	Identify the factor changed or selected as the input.
78	Dependent variable	Identify the outcome measured or modelled.
79	Controlled variable	Identify a factor kept constant to help isolate the tested relationship.
80	Control group	Identify the comparison group used as a baseline.
81	Experimental design	Use the stated groups, conditions and measurements to judge the experiment.
82	Sample size	Check how many observations or individuals contribute to the result.
83	Random assignment	Use the assignment procedure to assess whether treatment groups support a causal conclusion.
84	Random sampling	Use a selection process that assigns known selection chances by chance.
85	Representative sample	Check whether the selected cases reflect the population of interest.
86	Raw data	Use the measurements as originally collected.
87	Processed data	Use values calculated, combined or transformed from the original readings.
88	Outlier	Identify an observation unusually far from the general pattern.
89	Uncertainty	State or interpret the estimated doubt associated with a measurement or value.
90	Error bars	Read their meaning from the figure legend before interpreting them.
91	Repeatability	Consider agreement when the same method is repeated under the same conditions.
92	Reproducibility	Consider whether results agree when the method is repeated under changed conditions.
93	Validity	Consider whether the evidence or method answers the intended question.
94	Reliability	Consider whether a result or method gives consistent findings.
95	Confounding factor	Identify a factor that could contribute to the apparent relationship.
96	Correlation	Describe how variables vary together within the data.
97	Causation	Explain how or why one development contributed to another.
98	Trend	The broad direction or pattern over a range.
99	Pattern	A regularity visible across observations or examples.
100	Scatterplot	Describe form, direction, strength and unusual points when relevant.
101	Read the axes	Identify the quantities, units and intervals on a graph before using a value.
102	Baseline measurement	Use the reading taken before the stated intervention or change.
103	Explain a limitation	Identify the assumption or data issue that restricts the conclusion.
104	Residual	Find the observed value minus the model’s predicted value.
105	Cohort	Identify the group followed or compared in the study.
106	Cross-sectional comparison	Read the differences measured at the stated time without assuming a later causal sequence.
107	Experimental manipulation	Identify what investigators deliberately changed.
108	Selection bias	Check whether the way participants were included affects the comparison.
109	Alternative hypothesis	Identify a different explanation or prediction the study could test.
110	Control for	Account for a factor that could otherwise distort the comparison.
111	Statistically significant	Interpret the result under the test and threshold supplied, alongside the effect and uncertainty.
112	Sample mean	Use the average of the values in the specified sample.
113	Standard error	Interpret it as uncertainty in an estimated statistic where the question uses that measure.
114	Alternative explanation	Consider a different reason that could account for the same observation.
115	Practical significance	Judge whether the estimated difference matters in the setting.
116	Confidence interval	Give the plausible range for the population parameter under the stated method and conditions.
117	Margin of error	Identify the amount added to and subtracted from the point estimate in the stated interval.
118	Compare distributions	Use the same features for each group and compare them explicitly.
119	Evidence from the study	Use the relevant comparison or numerical result from the stated study.
120	Direction of change	State whether the quantity increases, decreases or stays unchanged.
121	Percentage point	Find the simple difference between two percentage values.
122	Random selection	Use chance to choose participants from a defined population to support representativeness.
123	Convenience sample	Participants are recruited because they are readily accessible.
124	Case study	Researchers examine one person, group or case in depth.
125	Naturalistic observation	Researchers record behaviour in its usual setting.
126	Self-report measure	Participants report their own experiences, attitudes or behaviour.
127	Social desirability bias	Responses may shift toward what participants believe is socially acceptable.
128	Demand characteristics	Cues about the study can influence participants’ behaviour.
129	Right to withdraw	Participants can stop taking part without penalty.
130	Debriefing	Researchers explain the study afterward, including relevant details withheld earlier.
131	Anonymity	The responses cannot readily be linked by the researchers to identified participants.
132	Third-variable problem	Another factor could account for an observed association between two variables.
133	Effect size	An estimate of the magnitude of a difference or relationship.
134	Correlational study	Researchers examine an association between measured variables.
135	Observational study	Check what researchers observed and which causal conclusions the design cannot establish by itself.

Further instructions and response vocabulary

No.	Instruction or term	Meaning or action
136	Contrast	Show how the items differ on a shared point of comparison.
137	Predict	Use available evidence to say what is likely to happen.
138	Suggest	Offer a plausible answer suited to the information given.
139	Assess	Judge the extent, value or strength of something using evidence.
140	Discuss	Develop a structured response that considers the relevant issues.
141	Illustrate	Make an idea clear with a relevant example or diagram.
142	Demonstrate	Show how a fact, process or result can be established.
143	Arrange	Put items into the order or grouping requested.
144	Sequence	Put stages into a meaningful order.
145	Classify	Assign each item to a category using the stated rule.
146	Order	Sort items by the criterion given in the prompt.
147	Omit	Leave out the indicated item or detail.
148	Include	Make sure the requested part appears in the response.
149	Exclude	Keep the named item or category outside your answer.
150	Refer to	Use the specified passage, figure or notes when responding.
151	Based on	Ground the answer in the material named in the question.
152	According to	Use what the specified source says.
153	In context	Use the meaning that fits this passage or situation.
154	Most likely	Choose the conclusion with the strongest support among the options.
155	Best supported	Prefer the conclusion backed most directly by the evidence.
156	Explicit	Stated directly in the source.
157	Implicit	Suggested by the source and recoverable from clues.
158	Example	A particular case used to make a general idea clear.
159	Conclusion	The result reached after considering the reasoning or evidence.
160	Assumption	A premise taken as given for the purpose of the question.
161	Condition	A requirement that must be satisfied.
162	Constraint	A restriction that shapes the possible answers.
163	Criterion	A standard used to choose or judge an answer.
164	Source	The particular text, figure, notes or data supplied for use.
165	Passage	A stretch of text provided for reading and answering questions.
166	Statement	A complete assertion to examine or respond to.
167	Option	One of the choices the question offers.
168	Section	A group of questions or tasks within a test.
169	Figure	A numbered graph, image or diagram referred to in the task.
170	Table	Information arranged in rows and columns.
171	Graph	A visual display of data or a mathematical relationship.
172	Diagram	A drawing showing features, structure or relationships.
173	Scale	The intervals or measurement relationship used in a display.
174	Unit	The standard attached to a measurement, such as minutes or metres.
175	Define	Give the precise meaning used in the subject or question.
176	Outline	Give the main steps or points in brief.
177	Give	Supply the requested fact, example or result.
178	Name	Supply the correct term, person or item.
179	List	Set out the requested items separately.
180	Record	Write the result in the space and form provided.
181	Indicate	Make the chosen feature or answer clear.
182	Complete	Fill in what is missing while keeping the supplied structure.
183	Locate	Find the specified detail, point or region.
184	With reference to	Tie each important point to the specified material.
185	With examples	Support the answer with concrete cases from the appropriate material.
186	Two reasons	Give two distinct explanations for the relevant result.
187	Subpart	Treat each separately lettered or numbered question as its own instruction.
188	Scoring guidelines	Review what the released rubric accepts for each point.
189	Course and Exam Description	Check College Board’s guide for the named AP course and exam year.
190	Released free responses	Use College Board’s published examples and scoring guidance for practice.
191	Mechanism	Describe the steps through which an outcome is produced.
192	Explain one way	Give one specific example and show how it meets the stated condition.
193	Support the claim	Give evidence that bears on the exact claim in the question.
194	Approximation	Give a suitably rounded or estimated value.
195	Parameter	Identify a quantity that sets a feature of the model.
196	Model	Use a simplified mathematical or conceptual representation to address the task.
197	Limitations	Identify specific boundaries on the conclusions that the method can support.
198	Strengths	Explain features that make the evidence or method fit the purpose.
199	Counterexample	Give one valid case that disproves a general claim.
200	Perspective	Explain the viewpoint from which a claim or event is presented.

What AP Research requires

AP Research is assessed through course work. Its two components are the academic paper and the presentation with oral defence. Submit the final academic paper in the AP Digital Portfolio by April 30, 2027, at 11:59 p.m. U.S. Eastern Time.

Assessment component	Format and weighting
Academic paper	4,000–5,000 words, scored by College Board and worth 75%.
Presentation and oral defence	15–20 minutes in total, including 3–4 questions from a three-person panel. Teacher-scored and worth 25%.

AP is a U.S.-based programme taken domestically and internationally. Confirm local reporting or submission arrangements with your school or test centre. Practise with the official materials for your course and assessment year.

Read the task before planning a response

Keep a record of why you made each major decision. A good method explanation names the evidence you need, describes how you collect or select it, and explains how you analyse it. For research involving people or potentially sensitive material, follow the current course and school review procedures before data collection.

Worked examples for common exam instructions

Turn a topic into an answerable question

Prompt. Narrow a topic about sustainability claims in school newsletters.

Answer. Ask how the newsletters of three named schools framed transport sustainability during a defined academic year. Specify the issues and sections you will include before coding.

Justify a method

Prompt. Explain why a structured content analysis fits the newsletter question.

Answer. The evidence is published text. A coding scheme can classify recurring frames consistently, and short excerpts can illustrate how each frame is expressed.

Interpret the findings within scope

Prompt. In the sampled newsletters, cost appears more often than emissions. What can the finding support?

Answer. It supports a comparison of emphases in the selected issues. It does not show what families believe or whether their travel changed.

Defend an inclusion decision

Prompt. The panel asks why only newsletters from a single year were used.

Answer. I used one year to compare publications from the same period and keep coding manageable. A multi-year follow-up could test whether the patterns were stable.

Use the Fencing Method to build an answer

Start with a small, accurate answer. Add the detail that fixes it to the case, then add the reason that supports it. Try the same structure with a new source, work or passage.

Start. I used content analysis.

Add context. I coded transport-related passages in a defined set of newsletters.

Add reasoning. The method lets me compare how the selected publications frame transport, while the sample limits what I can say about other years or schools.

Transfer. Choose a question about audience opinions and explain why a text-only method would answer a different question.

Practise with the 200 terms

Choose a decision from your own research and explain it aloud in two sentences. In the first, state the decision. In the second, give a reason and name the limit it creates.

Find the unit of analysis

Try it. Each newsletter contains several passages and you code them separately. Your conclusions compare whole newsletters. What is measured and what is compared?

Check. The passages supply observations, while the newsletters are the units being compared in the conclusion.

Frequently asked questions

What if a finding is unexpected?

Report it clearly. Check how the evidence was collected and analysed, consider plausible interpretations, and explain what further evidence could distinguish them.

Official sources and next reading

College Board AP Research assessment information and scoring samples · College Board AP dates and deadlines

Top 200 Vocabulary Word List for AP Research | Must Know Words for Common Examination Instructions