How Different Are Our Inner Monologues?

Scientific concepts, discoveries, and nature/brain phenomena presented

Inner thinking is mostly “not in words”

• People spend a large fraction of waking life thinking about things that are not happening externally (mind-wandering).
• Total thought rates are described as being in a wide estimated range (thousands of thoughts per day).
• Only a minority of thoughts are experienced as verbal inner speech; many are nonverbal (images, sounds, memory flashes, feelings, “gut pulls,” half-formed ideas).

There are multiple “formats” of inner monologue/thought

The subtitles describe five self-reported thinking styles that vary across people:

• Verbal (internal voice) thinking (~40%)

  • Ongoing inner dialogue, self-argument, rehearsal.
  • Inner speech may account for a substantial share of thoughts for verbal thinkers, with large variation between individuals.

• Visual thinking (~50%)

  • Mental imagery/snapshots without words (e.g., remembering where keys were via an image).

• Feeling-based thinking (~20%)

  • Emotional pulls, moods, and body-level sensations guide interpretation/action.

• Sense-based thinking (~20%)

  • Mental “sensory” recall (e.g., feeling the motion of pocketing keys, remembering sound).

• No audio/visual association / “no inner thoughts” (described as a group not that small)

  • People report that they don’t experience inner thoughts like others do.
  • The subtitles note percentages may not sum to 100 because people can blend styles.

Blended and graded experiences

• People can combine multiple formats (e.g., verbal + visualization + emotions).
• Within each style, individuals differ in intensity/clarity (e.g., fragments vs full dialogue; crisp scenes vs faint silhouettes).

Mental imagery varies: the “apple test” and aphantasia

The subtitles reference a common imagery demonstration: the “apple test”.

• Some people see vivid, rotatable, high-detail imagery.
• Others see low-resolution impressions, symbols/words, or none.

Aphantasia

• Described as inability to form mental images.
• Reported prevalence: ~0.8% (as stated).
• Many aphantasic individuals reportedly realize their difference only in their 20s–30s.

Hyperphantasia

• Temple Grandin is referenced as a hyperfantasic visual thinker:
  • Exceptionally vivid mental imagery “as real as actual sight.”
• Grandin’s quote is used to illustrate how different inner representations make communication harder (word-based vs picture-based thinking).

Additional inner experiences described as measurable/associated traits

• Musical imagery: many people can replay music internally; some can do it nearly indistinguishably from real sound.
• Inner voice timbre/character simulation: people can mimic different pitches and character voices in their head (even voices they cannot produce physically).
• Sensory imagination
  • Some people report “feeling” sensations via imagination (cold metal chills, velvet texture, pain that can be felt enough to be uncomfortable).
  • Reported prevalence in the subtitles: ~15%.
  • Reported association: those who have sensory imagination score higher on effective empathy (feeling what others feel).

Memory training methodology (LOSI / memory palace)

A listed technique is described:

• LOSI method / “memory palace”
  • Convert information into a walkable mental route through a familiar place.
  • Assign specific objects/corners to items of information.
  • Used by competitive memory athletes.
  • When taught to regular people in studies (as stated), recall reportedly increases to ~5–10× compared to repetition alone.

Cognitive consequences of thinking style

• Verbal thinkers may have advantages in planning, problem solving, and rehearsal.
• The subtitles claim verbal thinking is associated with a higher tendency toward looping thoughts/overthinking.

Researchers or sources featured (named in subtitles)

• Temple Grandin (referenced for hyperphantasia and a quote)