Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractThis study tests whether psychological barriers exist around key reference points in gold and silver prices, namely numbers ending in 0 (e.g. $450) and 00 (e.g. $200). Initial observations and tests show gold prices fix less frequently on values ending in 0 and 00, suggesting barriers at these levels which manifest as gaps in the frequency distributions. Statistical tests find support for barriers at numbers ending in 0 and 00 for gold. While initial observations and tests suggest silver prices are not uniformly distributed, there is no statistically significant evidence to support that barriers exist at either 0 or 00.2

Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractThis study tests whether psychological barriers exist around key reference points in gold and silver prices, namely numbers ending in 0 (e.g. $450) and 00 (e.g. $200). Initial observations and tests show gold prices fix less frequently on values ending in 0 and 00, suggesting barriers at these levels which manifest as gaps in the frequency distributions. Statistical tests find support for barriers at numbers ending in 0 and 00 for gold. While initial observations and tests suggest silver prices are not uniformly distributed, there is no statistically significant evidence to support that barriers exist at either 0 or 00.2

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Michael Lucey, E-mail: michael.lucey@durham.ac.uk This article examines an equity pairs trading strategy using daily, weekly and monthly European share price data over the period 1998 -2007