Point-of-time effects across the semester: is there a sampling bias?
A study was conducted to determine whether differences exist between students who volunteer for research credit at the beginning of the college semester and students who postpone their research participation until the end of the semester, in light of the fact that external validity might be threaten...
| Publicado en: | Journal of Psychology Vol. 132; pp. 211 - 220 |
|---|---|
| Autores principales: | , |
| Formato: | Artículo |
| Publicado: |
Taylor & Francis Ltd
March 1998
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=511047898&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 511047898 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00223980 JPY jtl: Journal of Psychology issn: 00223980 maglogo: N pubinfo: dt: March 1998 vid: 132 pid: 58221 pub: Taylor & Francis Ltd artinfo: ui: 511047898 10.1080/00223989809599160 ppf: 211 ppct: 9 formats: fmt: @attributes: type: T tig: atl: Point-of-time effects across the semester: is there a sampling bias? aug: au: Wang, Alvin Y. Jentsch, Florian G. su: Human research subjects Psychological research sug: subj: Human research subjects Psychological research ab: A study was conducted to determine whether differences exist between students who volunteer for research credit at the beginning of the college semester and students who postpone their research participation until the end of the semester, in light of the fact that external validity might be threatened when researchers take samples from university participant pools. Point-of-time effects were examined by means of measures of procrastination, motivation, locus of control, and cued recall. Results suggested that slight differences exist between early and late volunteers on some measures of personality and motivation, but no point-of-time effects were observed for cued recall. The findings further revealed that if performance-based measures such as cued recall are being examined, potential differences in personality and motivation might be attenuated because of the demand characteristics of laboratory settings. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|