It is a shame to think that there are people who think the way that Trisha do. For a start, talking about under 25s "in general" is ridiculous. Does she mean school leavers, university leavers or just 'young people' in general? I would love to know how many under 25s Trisha has worked with as it can't be many. It is statements like this that only reinforce the negative attitude towards young people here in the UK.
As an 'general' under 25 myself, I consider myself to be reliable, well behaved and have a good idea about suitable work attire. Granted, I am a university graduate but as I am being tarnished with Trisha's under 25 brush, I feel compelled to disagree with her. I would also say that my brother, an 18 year old who has just received his A-levels would also have a good idea of how to dress and behave at work. He is also very reliable and has had work experience.
Gil is 100% right, it is experience of working that makes the difference. For school leavers to become 'employable' it is going to take employers to take a chance on them and train them up. Whether someone is 16, 18, 25 or 50 - if they have never worked, how are they ever going to be employable? It is the employers who need to change and offer school leavers training schemes and time to develop. It is very hard for shcool leavers nowadays with every job adbvertisement saying 'experience required' and this needs to change.