No abstract

Family discussion of organ donation has been found to double rates of family consent regarding organ donation. Therefore, family discussion is an important communication process to study in the effort to get more people to become organ donors. This investigation concerns the willingness to communicate about organ donation and its relationship to other variables and processes related to family discussion of organ donation. Previous research on willingness to communicate examined the antecedent variables of knowledge, attitude toward organ donation, and altruism. This research found that being willing to communicate about organ donation with one's family is related to prior thought and intent to sign an organ donor card, to perceiving organ donation messages as credible, and to feeling relatively low anxiety after reading organ donation messages. One week after being presented with the messages, willingness to communicate was found to be positively associated with worrying about the lack of donors, engaging in family discussion about organ donation, and having an organ donor card witnessed. It was negatively related to feeling personally uneasy about organ donation during the past week.

Previous research finds that messages that induce substantial perceptions of (a) an unknown-other directed threat, (b) response-efficacy, and (c) self-efficacy result in feelings of anticipated guilt that subsequently motivate behavioral intent, and ultimately, behaviors to avert the threat to unknown others. It is not clear, however, if certain individual differences make people more or less likely to experience anticipatory guilt. To this end, this study asks whether empathic concern and perspective taking moderates the relationship between exposure to such a message and anticipated guilt. This question is tested by focusing on the topic of bone marrow donation. Participants are assigned randomly to 1 of 3 message conditions and complete a questionnaire designed to assess perspective taking, empathic concern, and anticipated guilt. The data indicate that the message has a substantial direct effect on guilt anticipation, and neither a direct effect for the empathy dimensions nor an interaction effect between empathy and anticipated guilt are present.

Null hypothesis significance testing (NHST) is the most widely accepted and frequently used approach to statistical inference in quantitative communication research. NHST, however, is highly controversial, and several serious problems with the approach have been identified. This paper reviews NHST and the controversy surrounding it. Commonly recognized problems include a sensitivity to sample size, the null is usually literally false, unacceptable Type II error rates, and misunderstanding and abuse. Problems associated with the conditional nature of NHST and the failure to distinguish statistical hypotheses from substantive hypotheses are emphasized. Recommended solutions and alternatives are addressed in a companion article.

Neural tube defects (NTDs) are serious birth defects of the brain and spine that affect approximately 3,000 pregnancies in the United States each year and affected 404 pregnancies in Puerto Rico from 1996 to 2002. Consuming the B vitamin folic acid can reduce the incidence of NTDs 50%-70%, and recent efforts to reduce NTD rates have focused on increasing the number of childbearing-aged women who take a vitamin containing folic acid every day. As the first stage of formative research in campaign planning, two exploratory, qualitative studies were conducted in order to (a) understand the complexity of vitamin use among women in the United States and Puerto Rico and (b) serve as a foundation on which to develop national communication and education interventions. Also, this information shed light on theories that might be used to guide campaign development. Results indicated that campaign messages designed to increase folic acid use through multivitamin supplementation in the United States must address women's barriers to vitamin use (e.g., cost, time), increase women's perceived need for multivitamins (e.g., identify immediate, tangible results from taking a daily multivitamin), and address the relationship between daily food choices and the need for supplementation. Future campaign messages in Puerto Rico must focus on many of these same issues, in addition to increasing women's knowledge about when folic acid should be taken in relation to pregnancy and addressing women's perceptions that vitamins cause weight gain (an undesirable outcome for most participants). The practical and theoretical implications of these results are discussed in terms of their contribution to the development of a creative new approach to increase multivitamin consumption among women of childbearing age in the United States and Puerto Rico.