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Market efficiency has been questioned since behavioural finance emerged. However, there is no theory consolidating both irrational investors' behaviour and their influence on financial markets. In this paper,we use bibliometrics to gain better knowledge of the current situation and trends in this research area.The results obtained by analysing the 1987–2017 period show a growth potential of Behavioural Finance. Investor sentiment is the main subject among the thirteen main subjects of this area.
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Paule-Vianez et al. (2020) studied this question.
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