The machine also had a widespread and lasting social impact in the United Kingdom, according to Clive Sinclair, purchasers of the ZX81 came from "a reasonably broad spectrum" that ranged from readers of the upmarket "Observer" and "Sunday Times" newspapers to the more downmarket but numerous "Sun" readers. The largest age group was around 30 years old. The "Financial Times" reported in March 1982 that most Sinclair computers were being bought for educational purposes, both for adults and children, though the children were usually able to learn much more quickly. Ian Adamson and Richard Kennedy note that the popularity of the ZX81 was "subtly different from the run-of-the-mill social fad"; although most enthusiasts were in their teens or early twenties, many were older users – often parents who had become fascinated by the ZX81s that they had bought for their children. However, the ZX81 boom was overwhelmingly male-dominated.