In addition to the emotional trauma and psychological suffering inflicted on the victims, these problems exact a heavy monetary toll on society. Like a pebble tossed into a pond, these problems have their most obvious effects at the point of entry, but the impact radiates outward in an ever-widening circle. Perhaps this simile is too optimistic: It implies that one can observe and predict relatively low-level effects as the modestsized waves dissipate at increasing distances from the initial point of impact. A coastal earthquake may provide a better analogy. The most obvious victims are those at the epicenter-the shy, the lonely, and the depressed. However, such traumatic events can lead to unexpected problems at quite some distance, just as the tsunami created by the earthquake can appear suddenly and unexpectedly thousands of miles away. For example, it is not simply the immediate family who suffer with the shy, lonely, and depressed; coworkers, friends, and acquaintances of the family may also be adversely affected. The health care costs, lost days at work, increased accident rates, and decreased productivity of the immediate victims and these "ripple effect" victims are all consequences of shyness, loneliness, and depression.Other hidden costs also accrue. For instance, there are theoretical and empirical reasons to suspect that these problems in living increase the likelihood of a variety of violent behaviors, ranging from child abuse to murder. For instance, Lee, Zimbardo, and Bertholf (1977) showed that convicted murderers who had no prior history of violence were unusually shy. Shyness, loneliness, and depression may all increase a variety of aggressive behaviors through at least three separate mechanisms (e.g., Anderson, Anderson, & Deuser, 1996; see also Berkowitz, 1993;Geen, 1990). First, the lack of satisfying interpersonal ties may contribute to a lower or less effective set of inhibitions against aggression. Second, the high level of negative affect characteristic of these problems in living may increase unwarranted aggression. Finally, these problems may prime aggressive thoughts, thus producing increases in aggression.
THE ROLE OF MODERN SOCIETYNumerous characteristics of modern society contribute to shyness, loneliness, and depression. The high mobility in U.S. society makes it difficult to develop and maintain close interpersonal relationships, even within families. Similarly, the loss of intergenerational ties and the rise of single-parent families contribute to the social isolation that underlies many of the problems in living. These characteristics of modem U.