StudyDuo
Body doubling vs parallel play: both mean doing your own thing next to someone, but parallel play is about company and body doubling is about a task. Parallel play is a child-development term from 1932: children playing side by side, each with their own toys. Body doubling, named by an ADHD coach in 1996, means working on your own task while someone else is present.
Where parallel play comes from
The term comes from psychologist Mildred Parten. In a 1932 study, she observed 40 nursery-school children during their free-play hour, one minute at a time. She sorted what each child was doing into six kinds of social participation: unoccupied, solitary, onlooker, parallel, associative and cooperative.
Parallel play sits in the middle of that list. A child plays near other children, often with the same kind of toys, but not with them. It's an ordinary part of being a toddler: by 30 months, according to the CDC's milestone list, a child "plays next to other children and sometimes plays with them".
For decades, parallel play was read as a stage that children pass through on the way to group play. A 1980 study by Roger Bakeman and John Brownlee changed the picture. They videotaped 41 children aged 32 to 42 months during indoor free play and coded what each child did next. Children moved from parallel play into group play more often than chance would predict, and every one of them made that move at least twice.
The authors concluded that parallel play often works as a bridge into playing together. The shift from one to the other, they wrote, "may be more a matter of minutes than months".
Where body doubling comes from
Body doubling is younger, and it comes from ADHD coaching. Linda Anderson, an ADHD coach and a past president of the Attention Deficit Disorder Association, named it in an article first published in 1996. Her client David, a retired corporate vice president recently diagnosed with ADD, told her he got more done when someone simply sat in a chair nearby. She had seen the same effect in other clients, and she called that quiet person the body double.
Her article keeps the role narrow: someone in proximity, "not advising, sorting, or strategizing". Why that presence helps is covered in body doubling for ADHD.
Research came decades later. When a team at UC Santa Cruz surveyed people about it for a 2023 paper, they noted that no academic study of body doubling existed yet. They proposed describing it on two continuous scales: space and time (whether you share a room and a moment) and mutuality (how much both people are in it together).
Body doubling vs parallel play at a glance
| Parallel play | Body doubling | |
|---|---|---|
| Named by | Mildred Parten, a child psychologist, in 1932 | Linda Anderson, an ADHD coach, in 1996 |
| Comes from | Research on preschool children | Coaching adults with ADHD |
| Usual age | Toddlers and preschoolers | Mostly adults |
| What happens | Each plays with their own things, near others | Each works on their own task, near others |
| What it's for | Company, and a way into playing together | Starting a task and staying with it |
| Talking | Optional; children watch each other | Goals shared at the start, then quiet |
| Who has to be there | Other children, in the same space | Anyone: in the room, on a call or in a video |
| Research | Observed in children since the 1930s | First academic survey in 2023 |
Three differences that change how you use them
Body doubling starts with a plan
Parallel play has no agenda beyond the play itself. A body doubling session starts with one. ADDA's guide suggests agreeing on a set time, blocking it out on your calendar and sharing your goals with your body double at the start.
One leads toward talking, the other away from it
Bakeman and Brownlee's toddlers used parallel play as a step toward group play. In body doubling, sliding into conversation is how a session fails: as ADDA's guide puts it, the body double's job "is to not engage with you". With a friend, agree on quiet blocks before you begin and save the talking for breaks, or the session drifts the way the toddlers' play did.
A body double doesn't have to know
Parallel play needs other children there, playing too. A body double can be the people at the next table in a café. It can even be someone in a YouTube video who will never know you were watching, and the Santa Cruz survey found both. Ways to use the idea with nobody around are in body doubling by yourself.
Parallel play in adult life
Adults do it without calling it anything: reading on the same sofa, knitting next to a friend, two laptops at one kitchen table. Silent Book Club turned it into an event. It began in San Francisco in 2012, with two friends reading together at a neighborhood wine bar. At its meetups, people share what they're reading, settle in for "an hour or so of sustained silent reading", and afterward socialize or don't (Silent Book Club).
We found no study that measures adult parallel play directly, so what's said about its benefits for adults rests on experience. In practice, the body doubling vs parallel play line is easy to see. Reading a novel next to a friend is parallel play. Clearing your inbox next to the same friend, because alone you'd never start, is body doubling.
Parallel play and autistic adults
For some autistic adults, parallel play isn't a phase they outgrew. In a 2024 study in Autism in Adulthood, Emma Pritchard-Rowe and colleagues interviewed 22 autistic adults aged 18 to 57 in the UK about play. A few described their social play as being close to others with no requirement to interact, which the authors call akin to Parten's parallel play. One participant, Fiona, described drawing next to someone: "to me that is social because you're together".
Most participants preferred playing with other autistic people, and one found it "not as draining" as playing with non-autistic people. Solitary play mattered too, as a way to recover. The authors argue that this style of play is a preference "different from but not 'less' than" more interactive play.
The same side-by-side setup can do both jobs on different days: company that asks little of you, or a body double when a task is waiting.
Which one do you need?
Which of the two you want can change from one evening to the next. Pick by what you want the time to do:
| You want | Try | Why |
|---|---|---|
| Company without conversation | Parallel play: a book, a hobby or a game beside someone | The company is the point |
| To start a task you keep avoiding | Body doubling, with the task named at the start | The task is the point |
| A break from people | Time alone | Both other kinds of company still put someone beside you |
| To learn material with someone | A study partner or group, with sound | You need to talk about the material |
| Someone who follows up over weeks | An accountability partner | A body double is there only during the session |
For learning together, this comparison of studying alone and in groups sorts tasks by setup. For follow-up between sessions, here's how to find an accountability partner when you have ADHD.
When side by side becomes a session
What turns parallel time into body doubling is small: a named task and an end time. That's how Focus Room on StudyDuo is built. Before you start, you write what you're working on and pick 30, 60, 90 or 120 minutes. The task shows under your name, microphones stay off, and the room never closes.
That task line holds the whole body doubling vs parallel play difference in one field. Leave it blank and you're keeping each other company; fill it in and you're working. More on how the room works for this: body doubling online.
FAQ
Is parallel play a sign of autism?
Not on its own. Playing next to other children is typical for toddlers, autistic or not. If you're worried about a child's development, start with your pediatrician or the CDC's milestone checklists.
What comes after parallel play?
In Parten's list, associative play: children play with each other and share materials, but without a joint project. Cooperative play comes last, with roles, rules and a shared goal.
Is coworking the same as body doubling?
Not exactly. A coworking space is a shared place to work. It becomes body doubling when you rely on the people around you to start a task and stay with it.
Do children body double?
Yes, though few families call it that. A child doing homework at the kitchen table while a parent cooks nearby is body doubling: each has their own job, and the company keeps the homework going.
