The aim of this research is to explore which cognitive function would affect the job tenure among people with schizophrenia. The investigators plan to recruit 60 people diagnosed with schizophrenia and divide into two groups, employment and unemployment. The investigators will use several cognitive function tests to collect their cognitive functions and PANSS to evaluate their psychotic symptoms. And then the investigators will compare and analysis the data through statistic software. Finally, the investigators will have the answer about if cognitive functions would affect the job tenure among people with schizophrenia. And the investigators hope that we could get the predict factor of cognitive function to predict the successful employment in future.