Thank you all for that! That's been a blurry line for years and no one seems to ever have a clear cut answer.
So a battery that measures cognition, achievement, and EF would be psychodiagnostic NOT neuro, correct?
Not necessarily. The Reitan Indiana Aphasia Screening Test has spelling and math in it. It's neuro.
The entire initial point of neuropsych is to differentiate psych from neuropathologies (i.e., organic vs non-organic). Back in the day, people were psych hospitalized for acting funny. Some of them dropped dead. Psychologists were asked if their tests could differentiate tumors from psychopathologies. They did. If you read the original Reitan manuals, the subjects in there were hilariously obviously neurological (e.g., hemiparesis). This is why the HRB original scale was designed only to differentiate organic vs not. Had zero to do with performance level.
The differentiation between "organic" vs "non-organic" then moved to localization. This is the hey day when neuropsych tests were used to plan neurosrugery. If you read Ruff's stuff, neuropsych was literally on call in major hospitals because neurosurgery. This is still the days skull x-rays. One of the reasons the LNNB had localization scales. Arguably this is also when neuropsych started to want to describe performance levels, not just say organic vs not. There are some extremely impressive things from this era, including ways to determine not only the location, but the type of tumor.
The advent of CT basically destroyed the entire point of localization. Neuropsychs moved to describe performance more, because that was what was left. You'll see more moves towards rehab planning in this era of literature. And a TON of in house fighting. AND a ton of attempts at stretching to apply neuropsych to new areas (e.g., minimal brain dysfunction, LD stuff, etc.). AND a ton of arguing about who is a real neuropsych. Wise people will notice the financial motivations here.
You'll notice nothing has really progressed since. Some tried to get MRI, fRMI, and even PET going. No one helped. A lot of successful professions stagnate for 40 years, right? Oh.....
This. I hear people say they are "doing neuropsych testing" all the time, but they are not neuropsychologists and not doing this. They are simply doing cognitive and academic testing. Linking scores, profiles, interview to specific neuroanatomy and neuropathology is the difference maker (at least how I explain to trainees).
Not really. If the purpose of the exam is diagnostic, then some cases have almost zero need for formal testing.
The entire scores thing is some throwback to how academia trains students. If one reads the literature about what is expected from families and patients, the point of the 15 page report becomes questionable at best.