Computer-Adaptive Testing

What is Computer-Adaptive Testing?

Computer-adaptive testing dynamically adjusts the difficulty of test questions based on the test taker’s responses. Unlike fixed-form tests, where every test taker answers the same questions, Avant STAMP tailors the test to the individual’s ability level in real time. This personalized approach ensures a “more accurate and efficient assessment across the proficiency scale” (Hendrickson, 2007).

How Does It Work? 

Avant STAMP uses a multi-stage adaptive testing (MST) design.

Each Avant STAMP test begins with Intermediate-level questions. As test takers move through the test, the questions adjust based on their skill level, becoming harder or easier depending on their performance.

This adaptive approach enhances measurement precision and improves the test experience. Unlike linear tests, where test takers may encounter questions that feel too easy or too difficult, Avant STAMP keeps the questions at an optimal level, providing a more engaging and accurate assessment.

Integrated Proficiency Tracking

In Avant STAMP, proficiency achieved in the Reading section informs the Writing prompts, and proficiency in the Listening section guides the Speaking prompts.

Reading Affecting Writing and Listening Affects Speaking
The Reading score affects Writing prompts, and Listening score affects Speaking prompts.

In the case of Avant STAMP WS, test takers perform a self-evaluation through a series of CAN-DO statements of Reading and Listening to determine the prompt levels for Writing and Speaking. 

Figure 1 shows the MST design employed in the STAMP assessments:

Visual of STAMP 4S Reading and Listening sections.
Figure 1.STAMP multistage testing (MST) design.

Why Choose Computer-Adaptive Testing Over Fixed-Form Testing?

1. Precision and Efficiency

  • Adaptive Questioning: STAMP adjusts the difficulty of questions based on previous responses, honing in on the test taker’s true ability.
  • Accurate Measurement: By continuously calibrating the test to the individual’s performance, STAMP provides a more precise assessment of their proficiency.

2. Enhanced Test Taker Experience

  • Reduced Test Anxiety: Test takers are less likely to encounter questions that are too difficult or too easy, creating an environment where they are challenged without leading to frustration.
  • Shorter Testing Time: STAMP typically requires fewer questions to accurately assess proficiency, reducing the overall testing time without compromising accuracy.

3. Data-Driven Insights

  • Real-Time Feedback: Immediate results and insights help educators tailor instruction to meet the specific needs of their students.
  • Detailed Reporting: Comprehensive data on individual and group performance allows for informed decision-making and targeted improvements.

Read the full white paper: The Development of a STAMP Test: Support for Test Validity

Challenges and Solutions in Computer-Adaptive Testing

While computer-adaptive testing offers numerous advantages, it also comes with its own set of challenges. Here are four common challenges and their solutions, inspired by industry insights:

1. Technical Issues and Digital Divide

  • Challenge: Test-takers may face technical difficulties or lack access to reliable technology.
  • Solution: Avant Assessment ensures robust technical support and offers solutions like offline assessment capabilities and compatibility with a wide range of devices to bridge the digital divide.

2. Security and Integrity

  • Challenge: Maintaining test security and integrity in a digital environment can be complex.
  • Solution: Avant implements advanced security measures, including secure browser environments, encrypted data transmission, and real-time monitoring to prevent cheating and ensure the validity of test results.

3. Test Fairness and Bias

  • Challenge: Ensuring that the adaptive algorithm fairly assesses all test-takers, regardless of their background.
  • Solution: Avant’s assessments are rigorously tested for fairness and bias, with continuous monitoring and updates to the adaptive algorithm to ensure equitable evaluation for all users.

4. Data Privacy Concerns

  • Challenge: Protecting the personal data of test-takers.
  • Solution: Avant is committed to data privacy, adhering to strict data protection regulations and implementing comprehensive data security protocols to safeguard personal information.

Why Avant?

At Avant, we lead the industry in developing and delivering superior language proficiency assessments. Here’s why we stand out:

1. Innovative Technology

  • STAMP: Our flagship assessment, STAMP (STAndards-based Measurement of Proficiency), is the world’s first online adaptive four-skill language proficiency test. Developed in partnership with the University of Oregon, STAMP has set the standard for accuracy and reliability.

2. Comprehensive Skill Coverage

  • Four-Skill Assessment: STAMP evaluates reading, writing, listening, and speaking, providing a holistic view of language proficiency.

3. Real-World Application

  • Competency-Based: Our assessments are designed to measure real-world language use, ensuring that test-takers are prepared for practical communication in diverse contexts.
  • Global Recognition: Avant’s assessments are trusted by educational institutions, businesses, and government organizations worldwide.

4. Expert Support and Training

  • Avant MORE Learning: We offer professional development and training to support educators in improving instructional outcomes and enhancing language proficiency.

References

Hendrickson, A. (2007). An NCME instructional module on multistage testing. Educational Measurement: Issues and Practice, 26(2), 44-52.

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