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Measuring news media literacy is important in order for it to thrive in a variety of educational and civic contexts. This research builds on existing measures of news media literacy and two new scales are presented that measure self-perceived media literacy (SPML) and perceptions of the value of media literacy (VML). Research with a larger sample of college undergraduate students and a smaller sample of adults enabled the validation of these measures. Results confirm the value of conceptualizing news media literacy using the theoretical subcomponents of authors & audiences, messages & meaning, and representation & realities. The VML scale, in particular, proved especially consequential in predicting knowledge about and attitudes towards the media.

The present study employed a longitudinal survey experiment with American adults to investigate whether cognitive and emotional appraisals of messages about climate change related health risks would mediate the relationships between participants' individual differences (in political ideology and health) and their perceived harm to self and support for climate change policies. The study found that liberals and people with poorer health evaluated the messages as more useful and interesting and generated more negative emotions toward the negative health consequences of climate change. In turn, they reported higher perceived harm to self from climate change and stronger support for climate policies, compared to conservatives and people with better health. [ABSTRACT FROM AUTHOR]