Reflecting a less favorable assessment of current business and labor market conditions, the Conference Board released a report today showing a modest deterioration in U.S. consumer confidence in this month, RTTNews reported. The Conference Board said its consumer confidence index slipped to 82.3 in April from an upwardly revised 83.9 in March. Economists had expected the index to climb. Though the index decreased compared with the previous month's upwardly revised reading, it is still at its second best level since January 2008.