--- abstract: This is a critique of Cohen's (1990) claim that the power of a statistical test 'is the probability that it will yield statistically significant results' (p. 1). Two putative advantages of using power analysis are examined. It is shown that H0 is not used as a categorical proposition descriptive of the world. Using significance tests is compatible with making rational judgment. altloc: - http://uregina.ca/~chowsl/pub_papers/SPOWER.htm chapter: ~ commentary: ~ commref: 'Cohen, J. (1990). Things I have learned (so far). American Psychologist, 45, 1304-1312.' confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: [] creators_name: - family: Chow given: Siu L. honourific: '' lineage: '' date: 1991 date_type: published datestamp: 1999-09-02 department: ~ dir: disk0/00/00/08/30 edit_lock_since: ~ edit_lock_until: ~ edit_lock_user: ~ editors_id: [] editors_name: [] eprint_status: archive eprintid: 830 fileinfo: /style/images/fileicons/text_html.png;/830/1/SPOWER.htm full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: 'Statistical power, Conditional probability, Type I error, Type II error, Conditional proposition, Sampling distribution, The null hypothesis as the consequent of a conditional proposition' lastmod: 2011-03-11 08:54:20 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: ~ pagerange: 1088-1089 pubdom: FALSE publication: American Psychologist publisher: ~ refereed: TRUE referencetext: ~ relation_type: [] relation_uri: [] reportno: ~ rev_number: 8 series: ~ source: ~ status_changed: 2007-09-12 16:34:54 subjects: - cog-psy succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: Some Reservations About Power Analysis type: journalp userid: 141 volume: 46