Overheads for Unit 7--Chapter 10 (Essay Questions)
OH 1
Essay Questions: Forms
They represent a continuum in how much freedom of response is allowed,
ranging from restricted-response essays on one end to
extended-response essays on the other.
- Restricted-response essay
- limits content and response to be given
- can limit via how narrowly question is phrased (e.g., as specific as a short-answer question)
- can limit via scope of the problem posed (e.g., with introduction like that of an interpretive exercise)
- therefore, can approach the objectivity of short-answer and
interpretive exercises
- Extended-response essay
- great freedom so that allows problem formulation,
organization, originality
- therefore, shares similar scoring difficulties with performance-based
tasks
OH 2
Essay Questions: Uses
Represent a continuum in complexity and breadth of learning
outcomes
assessed, with interpretive exercises on the left end,
restricted-response essays in the middle, and extended-response essays at
the right end.
- Restricted-response essays
- For learning outcomes not readily assessed objectively
- Compared to extended-response questions, they target narrower learning
outcomes, such as more specific mental processes (e.g., draws valid
conclusions)
- Extended-response essays
- For learning outcomes not readily assessed objectively or with restricted response essays
- Compared to restricted-response questions, they assess broader
learning outcomes, such as integrating a set of mental processes (e.g.,
integrates evidence to evaluate a scientific theory)
- Compared to interpretive exercises, both kinds of essays can assess
more complex learning outcomes
- See Table 10.1 on page 240
OH 3
Essay Questions: Advantages and Limitations
Advantages
- Measure complex learning outcomes not measured by other means
- Restricted-response essays: (i)
require students to supply, not just
identify, the answer and (ii) can target specific mental skills
- Extended-response essays:
emphasize integration and application of high-level skills
- Can measure writing skills in addition to (or instead of) knowledge
and understanding
- Easy to construct—but only if you don’t care what you actually
measure and how reliably you do so!
- Contribute to student learning, directly and indirectly
Limitations
- Unreliability of scoring (unless clear learning outcomes, good scoring rubrics, practice in scoring)
- Time-consuming to score—especially if follow guidelines. Can be impossible if conscientious in scoring, give good feedback, and have many students
- Limited sampling of content domain
OH 4
Essay Questions: Suggestions for Writing
Aim
- To call forth the intended student responses
Suggestions for writing essay questions
- Restrict use to learning outcomes that cannot be measured well by objective means (e.g., organization, originality)
- Write questions that can call forth the intended mental processes
- Easiest to do with restricted-response
- See sample stems on pp. 243-244
- For extended-response items, helps to state evaluation criteria in the question
- Make sure they do not target what has not been taught
- Phrase the question so that student’s task is clear and comparable for all
- Easiest with restricted response
- For extended-response, don’t
define the task so tightly that its purpose is spoiled
- Rather,
give explicit instructions on type of answer desired (e.g., "Your
answer should be confined to 100-150 words. It will be evaluated in terms
of
the appropriateness of the facts and examples presented and the skill with
which it is written.")
- Indicate approximate time limit for each question
- Give plenty of time (should be a power test not a speed test)
- Do not create overconcern about time
- Avoid optional questions
- Giving choices means students taking different tests
- They will not study the entire domain
- Review checklist on p. 248
OH 5
Essay Questions: Scoring Criteria
The Scoring Problem
- There is no single correct or best answer to an essay question, so you need guidelines—"rubrics"--for rating the quality of answers.
- Rubric = a set of guidelines for the application of performance
criteria to the responses and performances of students
Tackle it early--before you give the test
- Carefully specify your scoring criteria before you
finalize the exam
- May cause you to rethink or modify the question and its accompanying performance criteria
- That, in turn, enhances likelihood of calling forth the intended
responses
- Do an initial review of answers to a question to find exemplars or
anchors for your scoring levels
- Make sure you can describe the kinds of performance (e.g., "lists
two of the four key points") that qualify for each scoring level
("satisfactory," 2 points, etc.)
Why?
- Enhances reliability, validity, and fairness of scoring
- Saves you a lot of time and headaches when you score the exam
OH 6
Essay Questions: Scoring Criteria
You need rubrics!
- Rubric=guidelines for the application of performance criteria to the
responses and performances of students
- Types
Rubrics for restricted-response questions
- Write exemplar answer(s)
- Decide how to give points for each part expected for a full answer
- Decide the level of explanation necessary for full vs. partial
credit
Analytical rubrics for extended-response questions
- Specify the separate characteristics or dimensions you want to score (focus, elaboration, mechanics, etc. for an expository essay)
- Assign a series of levels to each characteristic (1-7, poor to excellent, etc.).
- Summarize the performance corresponding to each level ("main idea present but may not maintain consistent focus" for "adequate achievement" or 4 points for "focus"—example from table on p. 251)
- Result is a matrix against which to judge the elements of each essay
- Good for giving feedback to students
- See websites for examples (e.g.,
www.nwrel.org/eval/toolkit/traits/index.html
)
Holistic rubrics for extended-response questions
- Provides single overall score, no separate dimensions
- Decide how many levels.
- Summarize the performance corresponding to each level
- Easier to construct and apply than analytical rubrics
- May correspond better to grading needs
- But provides less feedback to students about strengths and
weaknesses
OH 7
Essay Questions: Summary of Suggestions for Scoring
Suggestions
-
Ease your burden by writing good questions in the first place (OH 4)
- Prepare outlines of expected answers in advance
- Can redesign poor questions
- Provides common basis for judging all students
- Standards less likely to shift during grading
- Use most appropriate scoring rubric, which depends on purpose
- Analytical, if focus is on multiple dimensions of performance and
giving feedback
- Holistic, if focus is on overall understanding rather than
writing skill
- Decide in advance how to handle factors irrelevant to learning
outcomes
- Irrelevant skills (legibility, spelling, etc.)
- Irrelevant or inaccurate factual information (risky to ignore, so consider warning in advance that will penalize)
- Evaluate all responses to one question at a time. Reorder the papers
before grading the next question.
- Maintains more uniform standards for a question
- Distributes effects of following a good or bad paper
- Minimizes halo effects
- When possible, evaluate without seeing students’ names
- Watch out for bluffing
- Good questions and scoring rubrics can reduce its impact
- See bluffing strategies on p. 256
- If important decisions rest on the results, use several raters
- Reconcile any big discrepancies
- Average the scores