Figures & data
Table 1. Significant altruistic behaviour.
Table 2. Aggregate fuzzy judgements.
Table 3. Cause-effect relationship.
Table A1. Linguistic evaluation scale.
Table A2. Initial Matrix.
Table A3. Normalized matrix.
Table A4. Total relation matrix.
Data availability statement
The data that support the findings of this study are available from the corresponding author, [HS], upon reasonable request.