A federal appeals court upheld the conviction of a woman who received a $304,204 tax refund after filing a slew of false returns with the Internal Revenue Service.The 7th U.S. Circuit Court of Appeals last week rejected the argument that Cathy Nicole Truitt should have been allowed to call a psychologist as an expert witness during her trial.Truitt wanted to offer psychologist Michael Fogel’s testimony to support her contention that she lacked the intent to make false statements or steal government funds.Fogel would …