A recent research paper presents an unconventional explanation for the declining birth rates in the United States: the iPhone. According to the study published by the National Bureau of Economic Research (NBER), the widespread adoption of Apple's smartphone may have significantly contributed to reduced fertility, particularly among teenagers and young adults.
Study Methodology and Findings
The research, titled "IS THE IPHONE BIRTH CONTROL? CAUSAL EVIDENCE FROM AT&T’S 2007–2011 CARRIER MONOPOLY," leveraged the exclusive partnership between Apple and AT&T from 2007 to 2011. During this period, the iPhone was only available through AT&T, and because AT&T's network coverage varied across counties, researchers could compare birth-rate trends in areas with differing levels of iPhone access.
The study found that regions with earlier iPhone access experienced larger declines in births compared to areas where access came later. Specifically, the researchers estimated that the diffusion of the iPhone explains between 33% and 52% of the decline in the general fertility rate among women aged 15 to 44 during the 2007-2011 period.
Impact on Younger Women
The effects were most pronounced among younger demographics. The study indicates that iPhone access reduced births among women aged 15 to 19 and 20 to 24, age groups that have seen some of the steepest fertility declines in recent decades.
Potential Mechanisms
The researchers do not claim that the iPhone directly causes people to avoid having children. Instead, they propose that smartphones have altered how individuals spend their time and interact. Survey evidence suggests that smartphones reduce in-person social interactions, increase pornography consumption, and lower sexual activity. These behavioral changes could lead to fewer unintended pregnancies and fewer births, especially among younger people.
An Axios report on the study highlighted that birth rates began falling sharply around the time the iPhone was introduced and continued declining even after the US economy recovered from the 2008 financial crisis, suggesting that economic factors alone cannot explain the trend.
