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The study of the environment-friendly consumer behaviour has gained more and more attention in the recent years. Several researchers tried to find an answer to the question: what are the reasons behind environment-conscious behaviour, which are the factors that play an important role in the realization of this behaviour: are they psychographic, demographic or other factors. The present article examines two generation group’s (boomer and X generation) environment-conscious attitude and the actual behaviour from a particular aspect among Hungarian college students. The primary research was carried out in the spring of 2010 and according to the results the environment conscious attitude of the two generation group is different because of the different personal characteristics. The members of the X generation, who are driven from the outside, do not like to differ too much from the members of their age group. Hence, due to the conform behaviour a greater ratio of this group declare themselves as environment-conscious as others. This ratio is lower among the members of the boomer generation, who are driven from the inside. However, the research results proved that the members of the boomer generation can be considered more environmental-conscious and as it is realized in their behaviour, also this positive disposition van be detected in their environment-conscious attitudes. The attitudes of course are not exclusive; however they have great influencing impact on the environment-conscious behaviour, although the strength of this is different among the generation groups. Whereas there is a significant, medium, positive correlation between the environment-conscious attitude and the actual behaviour of the X generation, there is only a weak, positive, however, significant difference between the attitude and the actual behaviour of the boomer generation.
Sexual selection is generally thought to be weak in cooperative breeding species, largely because polygamous mating patterns that drive sexual selection can erode the kin-selected benefits of cooperation. Social selection, on the other hand, is expected to be strong among cooperative species especially because of the intense competition over status and resource access. In support of this view, several studies have shown monogamous mating and little sex difference in cooperative species. However, most previous studies have focused on species with relatively simple social systems and few studies have examined how mating patterns, social organization and ecological attributes have influenced the evolution of ornamentation in cooperative species. Here I used secondary data to examine several hypotheses and shed some light on how social and sexual selection influenced the evolution of phenotypic sex traits in cooperatively breeding birds. Despite the broad assumption that cooperative breeding species are monomorphic, results demonstrate that sex differences and the presence of ornamentation are widely spread in the group. Stable environments with higher precipitation are associated to the strongest differences between sexes. Results indicate that although extrapair matings and environment attributes are determinant to the evolution of sex differences, males and females of cooperative species seem to be more alike than their non-cooperative counterparts. The extent of mutual ornamentation found in cooperative species indicates that the combination of both sexual and social selection are imperative to determine how evolution has shaped phenotypic attributes in cooperative species.
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