10 boys and 10 girls were left alone in separate houses. The results were shockingly different.

It sounds like the plot of William Golding's Lord of the Flies, but in the mid-2000s, it was a very real, and very controversial, reality television experiment. Footage from the UK Channel 4 documentary "Boys and Girls Alone" is captivating audiences all over again, offering a fascinating—and chaotic—look at what happens when you remove parents from the equation.

The premise was simple but high-stakes: 20 children, aged 11 and 12, were split into two groups by gender. Ten boys and ten girls were placed in separate houses and told to live without adult supervision for five days.

While there were safety nets in place—a camera crew was present (though instructed not to intervene unless safety was at risk), and children could ring a bell to speak to a nurse or psychiatrist—the day-to-day living was entirely up to them. The houses were fully stocked with food, cleaning supplies, toys, and paints.

Boys and Girls Alone, social experiment, reality TV, Channel 4, Lord of the Flies, parenting, gender differences, child psychology, viral video, nature vs nurture YouTube

As the resurfaced footage shows, the results between the two houses could not have been more different.

In the boys' house, the unraveling was almost immediate. The newfound freedom triggered a rapid descent into high-energy chaos. They engaged in water pistol fights, threw cushions, and in one memorable instance, a boy named Michael covered the carpet in sticky popcorn kernels.

Boys and Girls Alone, social experiment, reality TV, Channel 4, Lord of the Flies, parenting, gender differences, child psychology, viral video, nature vs nurture YouTube

The destruction escalated to the walls, which the boys covered in writing, drawing, and paint. But the euphoria of freedom eventually crashed into the reality of consequences.

“We never expected to be like this, but I’m really upset that we trashed it so badly. We were trying to explore everything at once and got too carried away in ourselves,” one boy admitted in the footage.

Their attempts to clean up were frantic and largely ineffective, involving scraping paint and messily mopping floors. Nutrition also took a hit; despite having completed a cooking course, the boys survived mostly on cereal, sugar, and the occasional frozen pizza. By the end of the week, the house was trashed, the garden was littered with garbage, and the group had fractured into opposing factions.

The girls' house, however, looked like a different planet.

Boys and Girls Alone, social experiment, reality TV, Channel 4, Lord of the Flies, parenting, gender differences, child psychology, viral video, nature vs nurture YouTube

In stark contrast to the mayhem next door, the girls immediately established a functioning society. They organized a cooking roster, with a girl named Sherry preparing their first meal. They baked cakes, put on a fashion show, and drew up a scrupulous chores list to ensure the house stayed livable.

While their stay wasn't devoid of interpersonal drama, the experiment highlighted a fascinating divergence in socialization. Left to their own devices, the girls prioritized community and maintenance, while the boys tested the absolute limits of their environment until it broke.

This article originally appeared last year.