Explaining computerized English testing in plain English

ɫèAV Languages
a pair of hands typing at a laptop

Research has shown that automated scoring can give more reliable and objective results than human examiners when evaluating a person’s mastery of English. This is because an automated scoring system is impartial, unlike humans, who can be influenced by irrelevant factors such as a test taker’s appearance or body language. Additionally, automated scoring treats regional accents equally, unlike human examiners who may favor accents they are more familiar with. Automated scoring also allows individual features of a spoken or written test question response to be analyzed independent of one another, so that a weakness in one area of language does not affect the scoring of other areas.

was created in response to the demand for a more accurate, objective, secure and relevant test of English. Our automated scoring system is a central feature of the test, and vital to ensuring the delivery of accurate, objective and relevant results – no matter who the test-taker is or where the test is taken.

Development and validation of the scoring system to ensure accuracy

PTE Academic’s automated scoring system was developed after extensive research and field testing. A prototype test was developed and administered to a sample of more than 10,000 test takers from 158 different countries, speaking 126 different native languages. This data was collected and used to train the automated scoring engines for both the written and spoken PTE Academic items.

To do this, multiple trained human markers assess each answer. Those results are used as the training material for machine learning algorithms, similar to those used by systems like Google Search or Apple’s Siri. The model makes initial guesses as to the scores each response should get, then consults the actual scores to see well how it did, adjusts itself in a few directions, then goes through the training set over and over again, adjusting and improving until it arrives at a maximally correct solution – a solution that ideally gets very close to predicting the set of human ratings.

Once trained up and performing at a high level, this model is used as a marking algorithm, able to score new responses just like human markers would. Correlations between scores given by this system and trained human markers are quite high. The standard error of measurement between ɫèAV’s system and a human rater is less than that between one human rater and another – in other words, the machine scores are more accurate than those given by a pair of human raters, because much of the bias and unreliability has been squeezed out of them. In general, you can think of a machine scoring system as one that takes the best stuff out of human ratings, then acts like an idealized human marker.

ɫèAV conducts scoring validation studies to ensure that the machine scores are consistently comparable to ratings given by skilled human raters. Here, a new set of test-taker responses (never seen by the machine) are scored by both human raters and by the automated scoring system. Research has demonstrated that the automated scoring technology underlying PTE Academic produces scores comparable to those obtained from careful human experts. This means that the automated system “acts” like a human rater when assessing test takers’ language skills, but does so with a machine's precision, consistency and objectivity.

Scoring speaking responses with ɫèAV’s Ordinate technology

The spoken portion of PTE Academic is automatically scored using ɫèAV’s Ordinate technology. Ordinate technology results from years of research in speech recognition, statistical modeling, linguistics and testing theory. The technology uses a proprietary speech processing system that is specifically designed to analyze and automatically score speech from fluent and second-language English speakers. The Ordinate scoring system collects hundreds of pieces of information from the test takers’ spoken responses in addition to just the words, such as pace, timing and rhythm, as well as the power of their voice, emphasis, intonation and accuracy of pronunciation. It is trained to recognize even somewhat mispronounced words, and quickly evaluates the content, relevance and coherence of the response. In particular, the meaning of the spoken response is evaluated, making it possible for these models to assess whether or not what was said deserves a high score.

Scoring writing responses with Intelligent Essay Assessor™ (IEA)

The written portion of PTE Academic is scored using the Intelligent Essay Assessor™ (IEA), an automated scoring tool powered by ɫèAV’s state-of-the-art Knowledge Analysis Technologies™ (KAT) engine. Based on more than 20 years of research and development, the KAT engine automatically evaluates the meaning of text, such as an essay written by a student in response to a particular prompt. The KAT engine evaluates writing as accurately as skilled human raters using a proprietary application of the mathematical approach known as Latent Semantic Analysis (LSA). LSA evaluates the meaning of language by analyzing large bodies of relevant text and their meanings. Therefore, using LSA, the KAT engine can understand the meaning of text much like a human.

What aspects of English does PTE Academic assess?

Written scoring

Spoken scoring

  • Word choice
  • Grammar and mechanics
  • Progression of ideas
  • Organization
  • Style, tone
  • Paragraph structure
  • Development, coherence
  • Point of view
  • Task completion
  • Sentence mastery
  • Content
  • Vocabulary
  • Accuracy
  • Pronunciation
  • Intonation
  • Fluency
  • Expressiveness
  • Pragmatics

More blogs from ɫèAV

  • A man reading a book sat in a window

    Ways to help you work out the meaning of new words

    By Charlotte Guest
    Reading time: 4 minutes

    Learning a new language is an exciting journey, but it can also be challenging, especially when you encounter unfamiliar words. Don't let new vocabulary intimidate you. With the right strategies, you can work out the meaning of new words and enhance your language skills. Here are some effective ways to help you work out the meaning of new words so you can use these new words confidently and tackle any unfamiliar words with confidence.

    Before diving into practical tips, it's helpful to understand a bit about the origins of the English language. English is a Germanic language, but it has been heavily influenced by Latin, especially through the Norman Conquest in 1066 and the Renaissance period. Many English words have Latin roots, prefixes and suffixes. This historical context can be a valuable tool in decoding unfamiliar vocabulary.

  • Students sitting outside a building chatting and smiling together

    Understanding resolutions: Setting your language goals for success

    By Charlotte Guest
    Reading time: 3 minutes

    Millions of people make resolutions every New Year (or any significant milestone). Many learners set inspiring goals to acquire new skills, explore new academic fields, or develop better study habits. But how often do these resolutions stick? And how can you turn your learning-related goals into lasting habits? This post dives into the science of resolutions and practical strategies to make your learning commitments stick.

    Why do learning resolutions fail?

    that the majority of New Year’s resolutions fail by February. When it comes to learning, the reasons often include overly ambitious goals, lack of clear plans and failure to sustain motivation over time.

    One main reason resolutions fail is that they are not specific enough. Goals like "get fit" or "learn a language" are too vague and don’t include steps to take. Without a clear plan, it’s easy to feel lost and lose motivation.

    For example, it’s one thing to decide, “I’m going to learn French this year,” but without a structured plan, consistent practice and measurable benchmarks, the resolve often fizzles out.

    Another factor is having unrealistic expectations. While it's good to be ambitious, setting too high goals can cause frustration and burnout. For example, trying to master a skill in just a few weeks ignores the time and effort needed to improve.

    Distractions and other priorities can slow down progress. Life demands, like work or family, can easily push resolutions aside if they aren't included in everyday routines.

    How long does it take to form a habit?

    One key to sticking to a learning resolution is habit formation. Popular belief often quotes the “21-day rule,” but research says differently. A 2009 study published in the found that it takes an average of 66 days to form a new habit.

    However, this number varies based on personal factors, the difficulty of the habit and the surroundings. For instance, if your goal is to study for 20 minutes each day, it may feel more comfortable after a few weeks of practice. In contrast, picking up a harder learning habit, like spending two hours a day studying Mandarin grammar, could take much longer to become a regular part of your routine.

    Strategies for making resolutions stick

    1. Start small and specific

    Instead of setting a big goal like “become fluent in Spanish," set smaller, easy-to-reach goals. For example, try "learn 10 new Spanish words each day" or “listen to one Spanish podcast each week.” This makes your goal seem less overwhelming and helps you feel accomplished over time.

    that mixing big-picture goals with small, specific ones can be a useful way to stay on track when working toward long-term objectives.

    2. Use the power of routine

    Connect your new learning habit with one you already do. This is called “habit stacking.” For example, if you have coffee every morning, decide to study for 15 minutes as you finish your drink. Linking the new habit to a routine you already have makes it more likely to stick.

    3. Track your progress

    Keeping track of your learning helps motivate you and shows where you can improve. Whether you check off lessons in a language learning app like Mondly by ɫèAV or write notes in a journal, seeing what you’ve accomplished keeps you interested.

    4. Build accountability

    Tell your friends, family, or study groups about your learning goals. When someone else knows your goal, it can help you stay on track. It’s even better to join a community of others who want to learn, like on social media or in online classes.

    People who do well often set clear, achievable goals and share them with friends for support.

    5. Reward yourself

    Small rewards can go a long way toward maintaining motivation. Celebrate milestones with meaningful perks, such as a favorite treat, an afternoon off, or buying yourself a book on the subject you're learning.

    6. Anticipate and plan for setbacks

    Life happens—sometimes work is stressful or things go wrong. Remember that missing a day or getting behind doesn’t mean you've failed. Keep going by recognizing challenges and getting back to your study plan with fresh motivation.

    7. Don’t fear failure

    Mistakes are part of progress. Every mispronounced word or awkward conversation is a step closer to fluency.

    8. Reassess and adjust goals

    If your language learning plan isn’t working, change it. If weekly goals seem too much, try monthly goals instead. The key is flexibility.

    The reward of resolutions

    Keeping resolutions can be tough, but the benefits are great. Picture yourself reading a book in your target language, traveling more easily, or making stronger friendships with people from different cultures. With determination and these tips, you can achieve your language learning goals.

    Start today -Whether it's January or June, it's never too late to set new goals. Draft a language learning plan, break it into small steps, and watch as each day brings you closer to your destination.

  • Two coworkers stood together smilng and looking at a tablet together

    Corporate wrapped 2024 : A year in review

    By Charlotte Guest
    Reading time: 3 minutes

    At ɫèAV Languages, 2024 has been a landmark year full of innovation, connection, and impactful resources for businesses worldwide. We’ve worked on so many things with the aim to empower global workforces and help organizations unlock the potential of language skills to drive business success. Here's how we made a difference this year.