“That the relationship between self-concealment and suicidality is ‘partially explained by unmet personal needs in a non-clinical sample of young adults'” sounds reasonable to me, especially if you consider the links between bullying and youth suicidality and how that might effect capacity to reveal inner turmoil and seek support. But I’d guess there’s causal relationships in both directions. Revealing suicidality is stigmatising and likely to result in disempowerment and unwanted (and potentially harmful) medical attention. You can make a lot of rights disappear with the magic words “danger to oneself”. School children are under increasing surveillance for ‘signs’ of suicidality and mental illness (Hogge and Blankenship may have some experience of this). By and large they aren’t stupid. It would be a bit surprising if a lot of them aren’t concealing needs and feelings that might be interpreted as symptoms of something.