?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A591951&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Byron&rft.aufirst=D.&rft.au=Byron%2C+D.&rft.title=Student+anxiety+and+performance%3A+a+comparison+of+training+in+self-hypnosis+with+progressive+muscular+relaxation+to+enable+students+to+increase+control+of+their+anxiety.&rft.tpages=315&rft.date=2007&rft.inst=University+of+London&rft.degree=Doctoral