Computer Based Assessment $ Computer Adaptive Testing

1. WELCOME

2. Presented to
Mr. Ajas.S
M.Ed. Dept.
F.M.T.C.
Pallimukku
Presented by
Soorya Raj
I Sem. M.Ed
F.M.T.C
Pallimukku

3. ICT
INFORMATION & COMMUNICATION
TECHNOLOGY

5. – Information and communication technologie is an umbrella term that includes all technologies for the
manipulation and communication of information.
– ICT considers all the uses of digital technology that already exists to help individuals, business and
organization.
– Information and Communication Technology (ICT) has greatly changed the teaching-learning process
both at school and higher education level.
– ICT has not only changed the instructional system but the examination and evaluation system is also
being influenced to a great extent.
– In the recent years several innovative initiatives have taken place in the field of examination and
evaluation.
– Online assessment is now very common all over the world.
– Online examination make the assessments and evaluation system learner centric as it can be
conducted when the candidate is ready, rather than at the convenience of the system.

6. ASSESSMENT
– It is the process of identifying, gathering and
interpreting information about students' learning.
– It involves using wide variety of methods and tools
to evaluate, measure, and document the student
learning.
– It basically helps one to improve learning and also
set direction for ongoing teaching and learning
process.

7. ICT Based Assessment
– Use of ICT in assessment involves the use of digital devices to assist in the construction, delivery, storage or
reporting of student assessment tasks, responses, grades or feedback.
– Teachers can use computers to construct their assessment tasks, to deliver these tasks to relevant students
and to record and provide feedback and grades to these students
– It can be used to test many different capabilities and skills that are developed by students.
– In many disciplines laboratory equipment can be manipulated remotely and students can undertake real time
physical performances that are able to be recorded and used for assessment purposes.
– Technology-enhanced learning environments, tools and systems recreate learning situations which require
complex thinking, problem-solving and collaboration strategies and thus allow for the development of generic
skills.
– These environments allow learners and teachers to assess performance, understand mistakes and learn from
them.
– We are quickly approaching the stage where our imaginations will be the limiting factor in designing e-
assessment tasks.

8. Computer Assissted Assessment
– Computer-assisted assessment refers to the use of computers to assess students learning and
performance.
– It is a term that covers all forms of assessments, delivered with the help of computers.
– It may be either online or offline,
– some are marked with the aid of computers using Optical Mark Reading (OMR).
– it helps students to discover whether they have learned what the educator intended and provide
timely feedback.
– It can be summative, with limited feedback typically being given at the end of a course and serving
to grade and categorize the student's work. I
– It can also be diagnostic, e.g. by testing for pre-knowledge.

9. Advantages
– Computer assisted testing is more likely to be objective
testing; testing that can be marked objectively and thus
offers high reliability
– The benefit is that the tests can be marked quickly and easily,
and adapted to meet a wide range of learning outcomes.

10. Disadvantages
– It is usually associated with testing knowledge and skills rather than conceptual
understanding, because of the frequent use of multiple choice questions (MCQ)
formatting
– MCQ is believed to test at a lower level of understanding when related to Bloom's
Taxonomy
– Construction of good objective tests requires skill and practice and so is initially time
consuming;
– Hardware and software must be carefully monitored to avoid failure during
examinations;
– Security issues can be a problem in web-based CAA
– Students require adequate IT skills and experience of the assessment type.

11. Computer Adaptive Test
– One of the recent advancements in assessment
– It add a great deal of efficiency to the testing process.
– Depending on the student's responses, the software will automatically adjust the level of
difficulty of the questions it poses
– after a number of correct answers, it will move on to harder items
– If there is too many incorrect responses, it will move back to easier ones
– it include items from previous test content
– allows measurement of a very wide distribution of knowledge and skills from below grade level
to far above it
– It might exist in any given class or testing group.

12. CAT Components
– Calibrated item pool
– Starting point or entry level
– Item selection algorithm
– Scoring procedure
– Termination criterion

13. – Calibrated item pool
– A pool of items must be available for the CAT to choose from
– Starting point
– In CAT, items are selected based on the examinee's performance up to a given point in the
test.
– Item selection algorithm
– CAT has an estimate of examinee ability, it is able to select an item that is most appropriate
for that estimate
– Scoring procedure
– After an item is administered, the CAT updates its estimate of the examinee's ability level
– Termination criterion
– The CAT algorithm is designed to repeatedly administer items and update the estimate of
examinee ability

14. Advantages
– It can provide uniformly precise scores for most test-takers.
– It can typically be shortened by 50% and still maintain a higher level of precision
than a fixed version.
– Test-takers do not waste their time attempting items that are too hard or trivially
easy.
– Like any computer-based test, adaptive tests may show results immediately after
testing.

15. Disadvantages
– The first issue encountered in CAT is the calibration of the item pool.
– Although adaptive tests have exposure control algorithms to prevent overuse
of a few items, the exposure conditioned upon ability is often not controlled.
– In a CAT with a time limit it is impossible for the examinee to accurately budget
the time one can spend on each test item and to determine if he/she is on pace
to complete a timed test section.

16. ANY DOUBTS TO ASK……?

17. THANK YOU….