Loneliness is associated with a range of physical health problems, and health behaviors (e.g., alcohol use) have been specified as one factor that explains the compromised health of lonely people. Accordingly, in this investigation, we sought to test direct and indirect (through stress) effects of loneliness on substance use (i.e., alcohol consumption, drinking problems, and prescription medication use) over the course of 1 year in a 2-wave longitudinal study. These effects were tested in a sample of 210 young adults who completed self-report measures of loneliness and substance use at time 1 and then completed measures of stress and substance use at time 2. The results showed that loneliness did not have prospective direct effects on substance use, but that it did have significant indirect effects, through increased stress, on all indicators of substance use. These findings highlight the important role of stress in potentially compromising the health of lonely people by increasing their propensity to engage in health risk behaviors.

Despite the growth in research examining the use of computer-mediated communication (CMC) for exchanging social support, there remains much to learn about the support-related implications of CMC. An experiment was conducted to examine the influence of the reduced social cues associated with CMC on the outcomes of supportive interaction. Participants discussed a stressor with a confederate either face-to-face or via CMC and received informational or emotional support. Although they received the exact same support messages, participants in the CMC condition reported significantly greater worry and uncertainty discrepancy following the interaction than participants in the face-to-face condition. A main effect was also found for support message type. Consistent with the optimal matching model, informational support led to more beneficial outcomes than emotional support in response to the (controllable) stressor experienced by participants.

Widespread use of computer‐mediated communication (CMC) for exchanging social support has raised questions about the support‐related implications of CMC. This study drew from the dual‐process theory of supportive message outcomes and examined the implications of CMC for support message processing and outcomes. We hypothesized that the reduced social cues in CMC would encourage greater elaboration on support message content and lead support messages to have a greater impact than in face‐to‐face interaction. The results of the experiment showed that, although the support message was held constant, participants in the CMC condition reported the strongest motivation to receive support, engaged in the greatest level of message elaboration, and experienced the most beneficial changes in worry and uncertainty discrepancy.

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Although the utility of verbal person-centeredness (VPC) as a feature of social support messages has been demonstrated in numerous studies, questions remain about the scope and theoretical mechanisms that explain VPC effects. Two experiments were conducted to evaluate whether the salutary effects of VPC extend to generic VPC messages and to explore the role of validation as a theoretical mechanism. Participants discussed a personal problem with a fictional computer program named “ListenerBot” that provided standardized responses containing high or low levels of VPC. Participants who received high VPC feedback from ListenerBot experienced a greater reduction in emotional distress than participants who received low VPC feedback. Path models consistently showed that high VPC feedback validated participants’ feelings, which led them to reappraise their situation and ultimately reduced their emotional distress. VPC, however, did not impact participants’ discussion of their thoughts and emotions.

Loneliness has been shown to have direct effects on one's personal well-being. Specifically, a greater feeling of loneliness is associated with negative mental health outcomes, negative health behaviors, and an increased likelihood of premature mortality. Using the neuroendocrine hypothesis, we expected social inclusion to predict decreases in both blood glucose levels and low-density lipoproteins (LDLs) and increases in high-density lipoproteins (HDLs). Fifty-two healthy adults provided self-report data for social inclusion and blood samples for hematological tests. Results indicated that higher social inclusion predicted lower levels of blood glucose and LDL, but had no effect on HDL. Implications for theory and practice are discussed.

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Brunswik’s lens model was used as a guide to investigate the conditions under which people produce more and less effective support messages online. An experiment was conducted to examine the effects of identity cues concerning a support seeker’s responsibility for his or her distress and behavioral residue involving other online community members’ responses to the support seeker. Participants evaluated the support seeker more negatively, produced support messages containing lower levels of person-centeredness, and used fewer politeness strategies when the support seeker was more responsible for his or her distress than when the seeker was less responsible. These effects tended to be intensified when the quality of support from other community members was congruent with seeker responsibility compared with when others’ support and seeker responsibility were incongruent.