JOHN GOODCHILD is Joint Editor of Professional Investor and has contributed articles on investment theory and practice to numerous magazines. He co-edited, with Paul Hewitt, a collection of essays on the Unlisted Securities Market, which was published by the IIMR. Originally an analyst with Mullens Co., John Goodchild is now Associate with KBR, the London stockbrokers. CLIVE CALLOW has had widespread experience in financial business news, starting as an editorial assistant in the newsroom of The Finanical Times in the 1960s. After working for a US based publication specializing in the pet...