Alvaro de Menard read a couple thousand social science papers to understand their quality. His conclusions are that things haven't gotten much better since the start of the replication crisis:
It is difficult to convey just how low the standards are. The marginal researcher is a hack and the marginal paper should not exist. There's a general lack of seriousness hanging over everything—if an undergrad cites a retracted paper in an essay, whatever; but if this is your life's work, surely you ought to treat the matter with some care and respect.
Read his full post here.