Int. J. Environ. Res. Public Health 2020, 17, 1062 19 of 22
33. Kaplan, S. Cognitive maps in perception and thought. In Image and Environment: Cognitive Mapping and
Spatial Behavior; Transaction Publishers: Piscataway, NJ, USA, 1973; pp. 63–78.
34. James, W.; Burkhardt, F.; Bowers, F.; Skrupskelis, I.K.The Principles of Psychology; Macmillan London: London,
UK, 1890.
35. Alonso, E.; Mondragón, E. Associative Learning and Behaviour: An Algebraic Search for Psychological
Symmetries. In Language, Representation and Reasoning: Memorial Volume to Isabel Gómez Txurruka; Universidad
del País Vasco: Bilbao, Spain, 2007; p. 35.
36. Lang, A. The limited capacity model of mediated message processing.J. Commun. 2000, 50, 46–70. [CrossRef]
37. Tulving, E. Episodic and semantic memory. Organ. Mem. 1972, 1, 381–403.
38. Rosch, E. Cognitive representations of semantic categories. J. Exp. Psychol. Gen. 1975, 104, 192. [CrossRef]
39. Klimesch, W. The Structure of Long-Term Memory: A Connectivity Model of Semantic Processing ; Psychology
Press: London, UK, 2013.
40. Collins, A.M.; Loftus, E.F. A spreading-activation theory of semantic processing. Psychol. Rev. 1975, 82, 407.
[CrossRef]
41. Guo, L.; Vu, H.T.; McCombs, M. An expanded perspective on agenda-setting eﬀects: Exploring the third
level of agenda setting. Rev. De Comun. 2012, 11, 51–68.
42. Cheng, Y.; Chan, C.M. The third level of agenda setting in contemporary China: Tracking descriptions of
moral and national education (MNE) in media coverage and people’s minds.Int. J. Commun. 2015, 9, 18.
43. Wettler, M.; Rapp, R. Computation of Word Associations Based on Co-occurrences of Words in Large Corpora.
In Proceedings of the VLC@ACL 1993, Columbus, OH, USA, 22 June 1993.
44. Collins, A.M.; Quillian, M.R. How to make a language user. In Organization of Memory; Academic Press:
New York, NY, USA, 1972; p. 309.
45. Danowski, J.A. Inferences from word networks in messages. In The Content Analysis Reader; SAGE: Thousand
Oaks, CA, USA, 2009; pp. 421–429.
46. Hamed, A.A.; Ayer, A.A.; Clark, E.M.; Irons, E.A.; Taylor, G.T.; Zia, A. Measuring climate change on Twitter
using Google’s algorithm: Perception and events. Int. J. Web Inf. Syst. 2015, 11, 527–544. [CrossRef]
47. Haunschild, R.; Leydesdorﬀ, L.; Bornmann, L.; Hellsten, I.; Marx, W. Does the public discuss other topics on
climate change than researchers? A comparison of explorative networks based on author keywords and
hashtags. J. Inf. 2019, 13, 695–707. [CrossRef]
48. Veltri, G.A.; Atanasova, D. Climate change on Twitter: Content, media ecology and information sharing
behaviour. Public Underst. Sci. 2017, 26, 721–737. [CrossRef]
49. Abbar, S.; Zanouda, T.; Berti-Equille, L.; Borge-Holthoefer, J. Using twitter to understand public interest in
climate change: The case of qatar. In Proceedings of the Tenth International AAAI Conference on Web and
Social Media, Cologne, Germany, 17–20 May 2016.
50. Olteanu, A.; Castillo, C.; Diakopoulos, N.; Aberer, K. Comparing events coverage in online news and social
media: The case of climate change. In Proceedings of the Ninth International AAAI Conference on Web and
Social Media, Oxford, UK, 26–29 May 2015.
51. Hermida, A.; Fletcher, F.; Korell, D.; Logan, D. Share, like, recommend: Decoding the social media news
consumer. J. Stud. 2012, 13, 815–824. [CrossRef]
52. Small, T.A. What the hashtag? A content analysis of Canadian politics on Twitter.Inf. Commun. Soc. 2011, 14,
872–895. [CrossRef]
53. Bruns, A.; Stieglitz, S. Quantitative approaches to comparing communication patterns on Twitter. J. Technol.
Hum. Serv. 2012, 30, 160–185. [CrossRef]
54. Yang, G. Narrative agency in hashtag activism: The case of# BlackLivesMatter. Media Commun. 2016, 4, 13.
55. Bruns, A.; Burgess, J.E. The use of Twitter hashtags in the formation of ad hoc publics. In Proceedings of the
6th European Consortium for Political Research (ECPR) General Conference 2011, Reykjavík, Iceland, 25–27
August 2011.