1: But his mother is convinced he 's coming back . 2:  I think psychologically it is understandable , they choose to believe that their loved ones are still missing , so they can still have hope for them to return ,  says May Lam , a psychiatrist at The University of Hong Kong . 3: Chinese mother of son on missing plane still believes he will come home .
1: his mother 2: they 3: Chinese mother of son on missing plane