On one hand, working memory clearly matters for reasoning and learning. On the other hand, modern life relies so heavily on external tools that raw memory feels less central than it used to.
I remember struggling with digit span tasks even though I do well in real world problem solving. It made me question what those tasks are really capturing.
Do memory subtests still reflect meaningful cognitive ability today? Or are they measuring something that matters less in everyday functioning? How do others feel about their relevance in modern testing?
Working memory tasks are still relevant because they measure your brain’s ability to hold and manipulate information in real time, which is essential for reasoning, problem-solving, and learning. You can’t outsource the mental workspace needed to understand complex ideas or solve novel problems. Digit span predicts real-world success because it measures cognitive efficiency. However, these tasks are sensitive to anxiety and attention issues. If you struggle with digit span but do well on reasoning tasks, it might indicate ADHD or test anxiety rather than actually poor working memory.
I have a huge gap here: my Verbal IQ is 135 but my Working Memory is 100. In real life, this manifests exactly as you’d expect: I can understand incredibly complex concepts, but I constantly lose the thread of a conversation or forget what I walked into a room for. The test was painfully accurate. While I can use tools to compensate (I live by my calendar and notes app), the mental effort required for me to stay organized is 10x higher than for someone with a better memory. So yes, the test is relevant because it predicts that struggle perfectly.
Well, what is the purpose of testing? Should IQ tests evolve with cultural tools and measure what’s currently useful? Or should they remain stable to track something constant about human cognitive variation regardless of external scaffolding? If tools change what matters functionally, that’s real, but it doesn’t necessarily mean the underlying traits have changed. Both perspectives seem valid depending on whether you see tests as predictive instruments or as measurements of something more fundamental.