The leading explanation is surprisingly simple: the television and film you watched as a child may have shaped whether you dream in color or black and white. Before the 1960s, most people reported dreaming without color. After color TV became widespread, color dreams became the norm. Today, only about 4 to 5% of young adults’ dreams are black and white, but for older adults who grew up with black and white media, that figure jumps to roughly 25%.
The Strange History of Dream Color
For most of recorded history, writers and philosophers assumed dreams had color. Aristotle and Freud both described dreams as colorful experiences without giving it a second thought. Then something odd happened in the early 20th century. Study after study began reporting that most dreams were in black and white. In 1915, one researcher found that only 20% of dreams contained color. By 1942, just 29% of college students said they had even occasional color dreams. The numbers kept falling: a 1956 study put it at 15%, and a 1958 survey of hospital patients in St. Louis found that only 9% remembered color in their dreams. Researchers at the time went so far as to suggest that vivid, colorful dreams might actually be a sign of psychological problems.
Then, in the 1960s, the trend reversed almost overnight. When researchers woke sleepers during REM sleep and asked them immediately what they’d been dreaming, up to 83% reported color. By 2003, a replication of that earlier college student survey found that only about 18% said they rarely or never dreamed in color. The black and white dream had, for most people, vanished.
The Black and White TV Theory
The timing of this reversal lines up neatly with one major cultural shift: the transition from black and white to color television and film. Black and white movies dominated from the 1920s through the 1950s, the exact decades when grayscale dreams were most commonly reported. Color TV spread through American households in the 1960s, right when color dream reports surged. Philosopher Eric Schwitzgebel at UC Riverside was among the first to argue that this was no coincidence, proposing that the rise of black and white film media in the first half of the 20th century was directly connected to the belief (and possibly the reality) that dreams lacked color.
The strongest evidence comes from comparing age groups. In a study that divided participants by both age and childhood media exposure, people under 25 reported black and white dreams only 4.4% of the time. Older adults (over 55) who had access to color TV and film during childhood reported a similarly low rate of 7.3%. But older adults who grew up with only black and white media dreamed in grayscale about a quarter of the time. The childhood exposure seemed to matter far more than current viewing habits, suggesting there may be a critical window during development when the visual media you consume shapes the way your brain builds dream imagery decades later.
Cross-Cultural Evidence
To test whether this pattern held outside the United States, researchers studied three groups of Chinese students with very different media histories. One group came from a technologically advanced university in Hefei, a city of about a million people. The second group attended a university in the same city but came from rural areas with less media access. The third group consisted of high school students from a small rural town of about 50,000 people. As predicted, the groups with longer histories of color media exposure reported more color in their dreams. The pattern matched what had been found in American studies, making it harder to explain away as a quirk of Western culture.
Did Our Dreams Actually Change, or Just Our Descriptions?
This is the question researchers still wrestle with. There are two possibilities. The first is that black and white media literally altered people’s dream experiences, training the brain to generate imagery without color because so much of the visual input it processed during the day was grayscale. Under this view, someone who spent their childhood watching black and white cartoons and newsreels had a visual imagination that was partly calibrated to a world without color, and that calibration persisted for life.
The second possibility is that dreams have always been in color, but people’s descriptions of their dreams were influenced by the dominant visual medium of the time. When you wake up and try to remember a dream, you’re reconstructing a fading experience. If the closest reference point your brain has for “a scene I watched passively” is a black and white movie, you might unconsciously describe your dream the same way. The dream itself may have had color, but your memory and framing of it filtered that out. Schwitzgebel has pointed out that dreams are notoriously hard to report on accurately, and even small shifts in how a question is framed can change the answer.
The REM awakening studies from the 1960s lend some weight to the idea that color was always there. When people were woken mid-dream and asked immediately, the vast majority reported color. Earlier studies relied on morning questionnaires, giving memory more time to distort the experience. Still, the age-group differences found in modern studies suggest something real is happening. If it were purely a reporting artifact, you’d expect older and younger adults to give similar answers today, and they don’t.
Why It Still Happens to Some People
Even among young adults who grew up surrounded by color screens, a small percentage still dream in black and white some of the time. The reasons aren’t fully understood, but several factors play a role. Dream color appears to be partly a matter of attention: many dreams don’t have a strong color signal, and whether you register color depends on how vivid the dream is and how much visual detail your brain generates in that particular sleep cycle. Less vivid or less emotionally intense dreams may simply not encode color strongly enough for you to notice or remember it.
Individual differences in visual imagination also matter. People who think in vivid mental images during the day tend to report more color in their dreams. Those with less vivid “mind’s eye” experiences, sometimes called aphantasia when it’s extreme, may be more likely to dream in muted tones or without clear color. Your brain uses many of the same visual processing systems during dreaming that it uses during waking imagination, so the richness of one tends to predict the richness of the other.
Sleep stage matters too. Dreams during REM sleep, the phase associated with the most vivid and narrative-like dreaming, are far more likely to contain color. Dreams during lighter sleep stages tend to be more fragmented and visually sparse, which may make them seem colorless even if they aren’t truly grayscale. If you happen to wake from a lighter stage and recall a dream, you’re more likely to describe it as lacking color.
The bottom line is that black and white dreaming appears to be mostly a product of the visual environment your brain was trained on during childhood, with individual differences in imagination vividness and sleep stage filling in the rest. For the small number of people who still regularly dream without color, it’s not a sign of anything wrong. It’s a reflection of how powerfully the images we absorb shape the images we create.