Explaining computerized English testing in plain English

Pearson Languages
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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.

PTE Academic 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 Pearson’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.

Pearson 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 Pearson’s Ordinate technology

The spoken portion of PTE Academic is automatically scored using Pearson’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 Pearson’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

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    • Language evolution: Studying dialects reveals how languages change over time, adapting to societies' needs, migrations and innovations.
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    One example is a formal email to a client:

    Subject: Proposal for Partnership

    Dear Mr. Smith,

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    [...]

    I look forward to your response and the possibility of future collaboration.

    Warm regards,

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    When crafting business documents, several key elements ensure your workplace writing is effective and well-received. These elements include:

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    • Tone and formality: The tone should match the context and purpose of your communication. While a business proposal might require formal language, an internal email to colleagues can be less formal. Understanding the nuances of tone can greatly impact how your message is perceived.
    • Purpose-driven writing: Every piece of corporate writing should have a clear purpose. Whether it's to inform, persuade, request or confirm, keeping the purpose in mind ensures that your writing is focused and achieves its intended goal.
    • Attention to detail: Precision and accuracy are paramount. This includes correct grammar, punctuation and spelling, as well as ensuring that all facts and figures mentioned are accurate. Errors in your writing can diminish your credibility and confuse the message.
    • Cultural sensitivity: In a global business environment, it is crucial to be aware of cultural differences and avoid culturally sensitive phrases. This sensitivity can prevent misunderstandings and foster more harmonious business relations.

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    • Get feedback: Have your writing reviewed by proficient English speakers and incorporate their suggestions.
    • Brush up on basics: Reinforce your understanding of grammar, vocabulary and punctuation.
    • Utilize technology: Take advantage of language learning apps and online courses that offer business English modules. These tools can provide interactive learning experiences and immediate feedback.
    • Join professional networks: Participate in forums and networking groups where business English is used. Observing and engaging in discussions can enhance your understanding and application of business terminologies and conventions.

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    • Start with a clear purpose: Define the objective of your document and stick to it.
    • Organize your thoughts: Use headings, bullet points and paragraphs to structure your content logically.
    • Be concise: Use straightforward language and eliminate redundant words.
    • Use an appropriate tone: Maintain professionalism and consider the cultural context of your audience.
    • Revise and edit: Always revise your work for errors and clarity before sending it.

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    • Long-winded paragraphs that bury the main point.
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    • Writing that lacks a clear call to action.
    • Ignoring cultural nuances and making assumptions based on one's own cultural context. This can lead to misinterpretations or even offense, undermining the purpose of the communication.

    A bad example

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    Subject: Quick Hello and Ask 

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    Cheers!

    Alex

    The effects of poor professional writing

    Poor business writing can have far-reaching repercussions that can significantly impact an individual's career progression as well as an organization's reputation. Ineffective communication may lead to misunderstandings and loss of opportunities, eroding trust between parties and taking a toll on professional relationships. It's not just about immediate confusion or delays; the long-term effects can include the potential loss of business, as clients and partners may perceive inefficiency and lack of professionalism.

    English for effective business writing

    Mastering workplace writing is a continuous process that demands dedication and practice. By focusing on clarity, structure and an audience-centered approach, you can craft messages that not only inform customers but also influence them.

    Keep refining your skills, taking feedback positively, and staying updated with trends. Your written word has the potential to make a real impact in the business world, so wield your pen (or keyboard) and write with confidence and precision.

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