Questions about the Reliability & Validity poster

What’s on the Reliability & Validity poster?

Reliability — consistency against Validity — accuracy, side by side. Reliability — consistency: Test-retest: stable over time; Reliability — consistency: Inter-rater: observers agree; Reliability — consistency: Internal consistency: items cohere; Reliability — consistency: Split-half correlation; Validity — accuracy: Face: looks appropriate; Validity — accuracy: Concurrent: agrees with an existing measure; Validity — accuracy: Predictive: forecasts an outcome; Validity — accuracy: Ecological: generalises to real settings; Validity — accuracy: Temporal: generalises across time; Reliability limits validity. An unreliable measure cannot be valid; a reliable one ca…. Ecological validity is the commonest weakness in laboratory psychology, and the commonest evaluation point in exams.

Who is the Reliability & Validity poster for?

Reliability & Validity belongs to the Psychology section rather than to a school year, because life science is not something one grade owns. Anyone learning methods & statistics can pin it up — a beginner, a student mid-course, or someone revising years later.

When should you use the Reliability & Validity poster?

A broken scale that always reads 5 kg heavy is perfectly reliable and completely invalid. A wall chart earns its place by being glanceable from where the work is happening, so Reliability & Validity belongs on the wall where that life science work actually happens, within glancing distance, rather than filed away.

What other posters go with Reliability & Validity?

Choosing a Test, Descriptive Statistics and Research Ethics sit alongside Reliability & Validity in the Psychology section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Choosing a TestDescriptive StatisticsResearch Ethics

Is the Reliability & Validity poster free to download and print?

Yes. Reliability & Validity downloads as a free PDF with no account, no email and no watermark, like everything else in the Psychology section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence

What size does the Reliability & Validity poster print at?

Reliability & Validity is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Reliability & Validity loses nothing.Printing guide