The WMS-IV (Wechsler Memory Scale, Fourth Edition) is a set of tests used to assess memory. It measures how well a person remembers information they hear or see, both immediately and after a delay. It also assesses visual working memory, or the ability to hold and use visual information for a short time. A qualified professional administers the tests and interprets the results.

In California Family Law

The WMS-IV may appear in a psychological or neuropsychological evaluation when a parent’s memory is relevant to a disputed issue. For example, after a brain injury, an evaluator may assess memory alongside other abilities to help understand the parent’s everyday functioning.

The test does not measure parenting ability by itself. A low score does not, on its own, show that a parent cannot care for a child. The evaluator must consider what the results mean in context, including other information about the parent and the child’s needs.

In a child custody evaluation, psychological test results form part of a broader assessment. California Rule of Court 5.220 requires evaluators to explain the role of testing and support their conclusions with multiple sources when possible.