Next, whilst the population for the study was sufficiently large for the analyses it would be desirable to have a larger, more
heterogenous sample to test the hypotheses on.
Although the reason for this disparity is unclear, one speculation is that the
sample of respondents in the current study was more
heterogenous in terms of political views than the
sample in Study 1, perhaps incorporating a greater proportion of political conservatives who are known to be less likely to accept that human GHG emissions are causing anthropogenic global warming than political liberals or moderates [38]--[42].