1 mark for result/conclusion.
1 mark for linking it to an assumption explicitly (not by name only: a relevant concept needs to be mentioned).
e.g.
Children correctly identified 99\% of the cartoon faces (1 mark result). This could follow the principles of input (see cartoon), process (memory of cartoon) and output (recall cartoon) (1 mark supported link).
Adults correctly identified 66\% of human faces (1 mark result). This shows that people do have individual differences in memory recall (1 mark supported link).
There are other creditworthy responses.
2
If the link is not with an assumption from 5a, can only be awarded the result/conclusion mark.
Cannot simply re-state the assumption for the 2nd mark.