“…This would predict increased rather than decreased violent crime. Also, the proportion of youth aged 18 to 25 positively correlated with higher homicide or violent crime (Nivette, 2011) was increasing through the 2000s (Howden & Meyer, 2011) and, thus, would not predict reduced rates of homicide or violent crime. Recent attention has been given to the role of temperature on interpersonal violence (Hsiang, Burke, & Miguel, 2013), with an estimated 4% increase in violence for one standard deviation of warmer temperature; but again, any recent trend to warmer temperature would not predict a resulting decrease in violence, and the seasonal variations in violence associated with annual cycles of temperature are modeled by the seasonal parameters of the analyses performed here.…”