What factors are necessary to unambiguously demonstrate Symbolic Generalisation in humans.

Question: What factors are necessary to unambiguously demonstrate Symbolic Generalisation in humans.</p>
Please use the attached documents, particularly ‘Research Proposal’ and ‘Sections’ providing detailed guidelines. Documents include relevant links, complete data spreadsheet, marking criteria, example subject datasheet, etc. NO METHODS SECTION REQUIRED. Word count does not include Abstract, References (APA), Appendices. Analysis on SPSS to be carried out; please include relevant (raw) SPSS tables in Appendices. No strict number for references; please use more journal articles than other types. Books and websites can be used however only critically as these are not peer-reviewed