Effect of Handler Knowledge of the Detection Task on Canine Search Behavior and Performance.

Professional-handler dog teams in the Unknown group searched for 7.47 s longer than the Known group (similar direction of effect); however, this difference did not reach statistical significance ( F = 0.035, t = 0.189, df = 14, p = 0.85; Figure 1 ).

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Interestingly, although many comparisons did not quite reach the level of significance in our professional handlers, perhaps due to a smaller sample size, the direction of the effects all remained similar to the sport dogs.

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