Examining the psychometrics of the Psychopathology Inventory for Mentally Retarded Adults-II for individuals with mild and moderate intellectual disabilities.

Schaaf et al. (2015) built a new form of the PIMRA. PIMRA stands for Psychopathology Inventory for Mentally Retarded Adults. The new form is called PIMRA-II.

The team wanted a tool that works for adults with mild and moderate intellectual disability. They checked how well the items hang together. They did not test any treatment.

The paper only tells us the tool was made. It does not give pass-fail numbers or effect sizes. We know the revision exists, but we do not yet know if it is better than the old one.

Shearn et al. (1997) did the same kind of work earlier. They built a stress scale for adults with mild ID and showed it has three clean factors. Their success gives a road map for Schaaf et al. (2015).

van Herwaarden et al. (2022) also made a new tool, but for well-being, not illness. Both teams followed the same steps: write items, test them with adults with mild ID, and check reliability. The two studies show the field is moving toward self-report for this group.

Lawer et al. (2009) asked a different question. They took two big personality circles made for the general public and found the same factor shape still shows up when staff rate adults with ID. Their work hints that Schaaf et al. (2015) may also find familiar factor shapes in the PIMRA-II once full data are shared.

You now have a second-generation tool that may screen for depression, anxiety, and other problems in the adults you serve. Until the full psychometrics are published, treat PIMRA-II as a work in progress. Pair it with tools that already have numbers behind them, like the Lifestress Inventory or the well-being scale from van Herwaarden et al. (2022). Watch for the follow-up paper that gives sensitivity and specificity so you can judge if the new form is worth the switch.