Here is an interesting article that I recommend

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Abstract:

The week before Christmas, with staff winding down at a quiet celebration, might not be the most appropriate time to embark on a ground-breaking system to revolutionize a top company’s management-recruitment procedures. But a telephone call five days before Christmas Eve from one of the world’s best-known hotel chains – Hilton International – to business-psychology consultancy Human Factors International (HFI) signaled the go-ahead for a project they had been talking about for two years.