C1 Expression Formal 7 min read

Participants were recruited

Research methodology and reporting expression

Literally: Participants (people taking part) were (past tense state) recruited (enlisted/hired)

In 15 Seconds

  • Formal way to describe finding people for a study or project.
  • Commonly used in the passive voice for academic and professional reports.
  • Suggests an organized, ethical, and systematic selection process.
  • Best for research papers, business decks, and formal presentations.

Meaning

This phrase describes the formal, systematic process of finding and enrolling individuals to take part in a scientific study, market research, or a specific project. It suggests an organized effort where people are selected based on certain criteria rather than just happening to be there. It carries a professional, ethical, and slightly clinical vibe that implies the study followed proper rules.

Key Examples

3 of 10
1

Writing a university research paper

A total of fifty `participants were recruited` from the undergraduate psychology pool.

A total of fifty participants were recruited from the undergraduate psychology pool.

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2

Presenting market research on Zoom

Our `participants were recruited` via Facebook ads targeting parents aged 30-45.

Our participants were recruited via Facebook ads targeting parents aged 30-45.

<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>
3

Texting a fellow student about a project

I'm relieved because all the `participants were recruited` just in time for the deadline!

I'm relieved because all the participants were recruited just in time for the deadline!

<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>
🌍

Cultural Background

The phrase is tied to the concept of 'Informed Consent.' You cannot 'recruit' someone without explaining the risks. In tech, 'recruiting participants' often involves offering 'incentives' like Amazon gift cards. There is a strict distinction between 'recruiting' (finding them) and 'enrolling' (them actually starting the study). Researchers must be careful about 'recruitment bias'—only recruiting people who are easy to find (like university students).

🎯

Use the Passive

Always use 'were recruited' in formal papers. It sounds more objective than 'I recruited'.

⚠️

Avoid 'Subjects'

In modern English, 'participants' is preferred over 'subjects' because it sounds more respectful.

In 15 Seconds

  • Formal way to describe finding people for a study or project.
  • Commonly used in the passive voice for academic and professional reports.
  • Suggests an organized, ethical, and systematic selection process.
  • Best for research papers, business decks, and formal presentations.

What It Means

Imagine you are a scientist. You have a great idea for a new app that helps people sleep. But you need people to test it. You don't just grab random strangers on the street. You post ads, send emails, and check backgrounds. This whole process is what we call recruitment. When you write your final report, you say Participants were recruited. It sounds much cooler than saying "I begged people on TikTok to help me." This phrase is the gold standard for academic and professional reporting. It implies that there was a plan. It suggests that the people involved knew what they were signing up for. It also hints at an ethical process. In the world of research, you don't just 'get' people; you recruit them. It's like building a tiny, temporary army for knowledge.

How To Use It

You will almost always see this in the passive voice. We say Participants were recruited rather than "We recruited participants." Why? Because in formal writing, the focus is on the people being studied, not the researcher. It makes the study sound more objective. You can add more detail by using from or via. For example: Participants were recruited from local universities. Or Participants were recruited via social media. If you are talking about a clinical trial, it's very formal. If you are talking about a focus group for a new flavor of chips, it's still professional but slightly less intense. Just remember to keep it in the past tense. Once they are recruited, the work has already started!

Formality & Register

This phrase is very formal. You won't hear someone say this at a wild Friday night party unless they are a very boring sociology professor. It belongs in research papers, lab reports, and professional business decks. If you use it in a casual text message, your friends might think you've been hacked by a robot. On a scale of 1 to 10, with 1 being "Hey guys" and 10 being "The Queen's Speech," this is a solid 8. It’s perfect for LinkedIn articles or when you're presenting a case study on Zoom. Even if the 'recruitment' was just asking five people in a coffee shop, using this phrase makes it sound like a legitimate operation. It's the linguistic equivalent of putting on a blazer over your pajamas for a video call.

Real-Life Examples

Let’s look at how this looks in the wild. You might see a headline like, "Participants were recruited for a new NASA study on Mars living." This means NASA found people to pretend they live on Mars. Or maybe you're reading a tech blog: "500 participants were recruited to test the new VR headset." It’s also common in medical news: "Participants were recruited from three different hospitals." Even in marketing, you might hear, "Participants were recruited through Instagram ads for our focus group." It shows up everywhere people are needed for data. If you're a student, you'll see it in almost every 'Methods' section of the papers you read. It's the bread and butter of the academic world.

When To Use It

Use this when you are writing a formal report. It’s perfect for university assignments, science projects, or business analytics. If you are describing how you gathered a group of people for any kind of testing, this is your go-to phrase. It works for clinical trials, surveys, focus groups, and even beta-testing for software. Use it when you want to sound authoritative and organized. It’s especially useful when you need to explain the how and where of your group. "Participants were recruited via an online portal" sounds much better than "We found people online." It adds a layer of professionalism that shows you respect the process of data collection.

When NOT To Use It

Don't use this for your social life! If you invited five friends over for pizza, do not tell your mom that participants were recruited for a dinner event. She will be very confused. Also, avoid it in very casual work environments. If you’re just asking a coworker to help you test a printer, it’s too much. Don’t use it if the people weren't actually asked to join. If people just showed up at a public park, they weren't recruited. They were just observed. And definitely don't use it for hiring employees. We say "We hired three new developers," not "Participants were recruited for the coding team." Unless, of course, they are participating in a study about how much developers love free coffee.

Common Mistakes

One big mistake is using the wrong verb. People often say ✗ Participants were found or ✗ Participants were taken. These sound like a kidnapping plot! Stick to recruited. Another error is the active voice. ✗ We recruited the participants is okay, but Participants were recruited is the academic standard. Some people forget the preposition. ✗ Participants were recruited social media → ✓ Participants were recruited via social media. Also, don't confuse recruited with enrolled. Recruiting is the *finding* part; enrolling is the *signing up* part. If you say ✗ Participants were recruited into the medicine, it sounds like they are physically inside the pill. Use into the study instead.

Common Variations

You can spice this up with different adverbs or prepositions. Participants were recruited selectively means you were very picky. Participants were recruited randomly means you pulled names out of a hat (digitally, usually). You might also see Subjects were recruited. This is an older version. Nowadays, we prefer Participants because it sounds more human and less like a lab rat in a maze. In the UK, you might hear Participants were sourced, which sounds a bit like finding ingredients for a soup. In the US, recruited is the undisputed king. You can also say Participants were sought, but that sounds like a "Wanted" poster from the Wild West.

Real Conversations

Student A: How did you get people for your thesis survey?

Student B: Oh, participants were recruited through the psychology department's email list.

Student A: Nice. Did you pay them?

Student B: Just with the promise of extra credit and a sense of pride.

M

Manager

We need to explain our user testing phase in the presentation.
D

Designer

Okay, I'll write that participants were recruited from our existing user base via a pop-up notification.
M

Manager

Perfect. It makes the process look very thorough and professional.

Quick FAQ

Is this only for science? Not at all! It's used in marketing, psychology, tech testing, and any field that involves gathering data from people. Does it always have to be passive? Mostly yes in formal writing, but in a casual presentation, you could say "We recruited." Why not just say 'subjects'? Because 'participants' implies they gave consent and are active parts of the study, which is the modern ethical standard. Can I use it for animals? No, we usually say 'animals were sourced' or 'used.' Animals don't usually sign up for studies voluntarily, unless they're very ambitious squirrels. Is 'via' the only word I can use? No, you can use 'through,' 'from,' or 'by means of,' but 'via' is very common and sounds quite smart.

Usage Notes

The phrase is highly formal and almost exclusively used in written reports or professional presentations. It is the polite, ethical way to describe gathering people for data. Avoid using it in casual social settings to avoid sounding robotic or overly academic.

🎯

Use the Passive

Always use 'were recruited' in formal papers. It sounds more objective than 'I recruited'.

⚠️

Avoid 'Subjects'

In modern English, 'participants' is preferred over 'subjects' because it sounds more respectful.

💬

Mention the Source

Always follow the phrase with 'from', 'via', or 'through' to show your methodology is sound.

Examples

10
#1 Writing a university research paper
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

A total of fifty `participants were recruited` from the undergraduate psychology pool.

A total of fifty participants were recruited from the undergraduate psychology pool.

Standard academic usage highlighting the source of the group.

#2 Presenting market research on Zoom
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

Our `participants were recruited` via Facebook ads targeting parents aged 30-45.

Our participants were recruited via Facebook ads targeting parents aged 30-45.

Shows a modern, digital method of finding people.

#3 Texting a fellow student about a project
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

I'm relieved because all the `participants were recruited` just in time for the deadline!

I'm relieved because all the participants were recruited just in time for the deadline!

A slightly more relaxed but still professional use between peers.

#4 Instagram caption for a tech company
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

Exciting news! `Participants were recruited` last week to test our secret new feature. Stay tuned!

Exciting news! Participants were recruited last week to test our secret new feature. Stay tuned!

Modern corporate social media vibe.

#5 Explaining a medical trial
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

To ensure diversity, `participants were recruited` across four different city clinics.

To ensure diversity, participants were recruited across four different city clinics.

Emphasizes the geographic and demographic spread.

#6 A humorous take on a boring task
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.828 14.828a4 4 0 01-5.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>

If by 'study' you mean my birthday party, then yes, `participants were recruited` via a very desperate WhatsApp blast.

If by 'study' you mean my birthday party, then yes, participants were recruited via a very desperate WhatsApp blast.

Uses formal language for a casual situation for comedic effect.

#7 Describing a difficult process
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

Despite the niche requirements, the necessary `participants were recruited` within three weeks.

Despite the niche requirements, the necessary participants were recruited within three weeks.

Focuses on the timeline and difficulty of the task.

#8 An emotional thank you in a thesis
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4.318 6.318a4.5 4.5 0 000 6.364L12 20.364l7.682-7.682a4.5 4.5 0 00-6.364-6.364L12 7.636l-1.318-1.318a4.5 4.5 0 00-6.364 0z"/></svg>

I am deeply grateful to the `participants who were recruited` for sharing their personal stories so bravely.

I am deeply grateful to the participants who were recruited for sharing their personal stories so bravely.

Adds a human touch to the formal phrase.

A common learner error in academic writing Common Mistake
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

✗ The `participants were found` at the library → ✓ The `participants were recruited` at the library.

The participants were found at the library → The participants were recruited at the library.

'Found' sounds accidental; 'recruited' sounds like a planned research step.

Confusing hiring with research Common Mistake
<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 13.255A23.931 23.931 0 0112 15c-3.183 0-6.22-.62-9-1.745M16 6V4a2 2 0 00-2-2h-4a2 2 0 00-2 2v2m4 6h.01M5 20h14a2 2 0 002-2V8a2 2 0 00-2-2H5a2 2 0 00-2 2v10a2 2 0 002 2z"/></svg>

✗ New `participants were recruited` for the cashier job → ✓ New `employees were hired` for the cashier job.

New participants were recruited for the cashier job → New employees were hired for the cashier job.

'Participants' is for studies; 'employees' is for jobs.

Test Yourself

Complete the sentence using the correct form of the phrase.

To ensure the study was fair, 100 ________ ________ from various backgrounds.

✓ Correct! ✗ Not quite. Correct answer: participants were recruited

We need the plural 'participants' and the passive 'were recruited'.

Which sentence is most appropriate for a scientific journal?

Choose the best option:

✓ Correct! ✗ Not quite. Correct answer: Participants were recruited via an online portal.

This uses the correct formal register and passive voice.

Fill in the missing line in this professional dialogue.

Manager: 'How did you find the people for the focus group?' Researcher: '________________________.'

✓ Correct! ✗ Not quite. Correct answer: Participants were recruited through our customer database.

This provides a professional explanation of the sourcing method.

🎉 Score: /3

Visual Learning Aids

Practice Bank

3 exercises
Complete the sentence using the correct form of the phrase. Fill Blank B2

To ensure the study was fair, 100 ________ ________ from various backgrounds.

✓ Correct! ✗ Not quite. Correct answer: participants were recruited

We need the plural 'participants' and the passive 'were recruited'.

Which sentence is most appropriate for a scientific journal? Choose C1

Choose the best option:

✓ Correct! ✗ Not quite. Correct answer: Participants were recruited via an online portal.

This uses the correct formal register and passive voice.

Fill in the missing line in this professional dialogue. dialogue_completion B1

Manager: 'How did you find the people for the focus group?' Researcher: '________________________.'

✓ Correct! ✗ Not quite. Correct answer: Participants were recruited through our customer database.

This provides a professional explanation of the sourcing method.

🎉 Score: /3

Frequently Asked Questions

5 questions

Yes, but only in a presentation or a less formal report. In a thesis, 'participants were recruited' is better.

'Recruited' is the process of finding them; 'enrolled' means they have officially joined and started.

Usually, we just say 'The company is recruiting' or 'I was recruited by a headhunter.'

Not always. Sometimes they are volunteers, or they get 'course credit' in universities.

No, we usually say 'animals were sourced' or 'used in the study.' Recruitment implies a human choice.

Related Phrases

🔄

subject enrollment

synonym

The act of signing people up for a study.

🔗

convenience sampling

specialized form

Recruiting whoever is easiest to find.

🔗

informed consent

builds on

Permission granted in the knowledge of the possible consequences.

🔗

inclusion criteria

similar

The rules for who can be recruited.

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