Psych 626 Guide - Online Program

“Predatory” refers to the fact that these entities prey on academicians for financial profit via article processing charges for open access articles, without meeting scholarly publishing standards .
from: 
Clark J, Smith R. Firm action needed on predatory journals [Electronic version]. BMJ 2015;350:h210. Accessed February 14th 2017. Available at: https://www.researchgate.net/profile/Jocalyn_Clark/publication/271022726_Firm_action_needed_on_
predatory_journals/links/56f8f0cc08ae81582bf40ff0.pdf. https://doi. org/10.1136/bmj.h210
 

"... such journals do not provide the peer review that is the hallmark of traditional scholarly publishing. "...
 "Identifying such journals is important for authors, researchers, peer reviewers, and editors, because scientific work that is not properly vetted should not contribute to the scientific record."  p. 285
Although predatory journals may claim to conduct peer review and mimic the structure of legitimate journals, they publish all or most submitted material without external peer review and do not follow standard policies advocated by organizations such as the WAME (World Association of Medical Editors), the Committee on Publication Ethics (COPE), the International Committee of Medical Journal Editors (ICMJE), and the Council of Science Editors (CSE) regarding issues such as archiving of journal content, management of potential conflicts of interest, handling of errata, and transparency of journal processes and policies including fees.
A common practice among predatory publishers is sending frequent e-mails to large numbers of individuals soliciting manuscript submission and promising rapid publication for author fees that may be lower than those of legitimate author-pays journals. In the most egregious cases, they collect publication fees but the promised published articles never appear on the journal website.
from:
Laine, C., & Winker, M. A. (2017). Identifying predatory or pseudo-journals. Biochemia Medica, 27(2), 285-291. doi:10.11613/BM.2017.031

Predatory journals are accessible in Google Scholar.  
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In Google Scholar, researchers are unable to search specifically for peer reviewed or scholarly articles. 
(and...predatory journals are difficult to identify)
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Good News:  The Pepperdine Library's research databases do not include predatory journals.