Albert Read's The Imagination Muscle and the Imagination Facet (O1)
Albert Read spent a career in publishing and wrote The Imagination Muscle to rescue imagination from the idea that it is a gift a lucky few are born with. His thesis is in the title, that it is a faculty you train. He captures what it does in a line from his notes on the book: "What is the miracle of the imagination? To see what is not already there." How readily your mind does that is, in the Big Five, one facet.
The mind that conjures the not-yet-real is Imagination
That facet is Imagination (O1), under Openness, which measures how vivid and active your inner world is, how easily you drift into daydreams, possibilities, and what-ifs. A high scorer lives partly in a realm of things that do not yet exist, which is native territory for Read's kind of seeing. A low scorer keeps closer to the concrete and the actual, and may treat vivid daydreaming as time better spent on the real. Read's argument is a defense of the high end and a coaching manual for the low one, insisting the muscle grows with use rather than sitting fixed at birth.
The unusual thing about the book is that it treats imagination historically, tracing how the faculty has been fed and starved across centuries, which quietly makes the case that it responds to conditions. For a lower-O1 reader that is the encouraging part, because it reframes a quiet inner life not as a permanent limit but as a muscle that has simply not been exercised much. You feed it by wandering and by the kind of boredom that lets the mind roam, and it answers. The person who thinks they have no imagination usually has one that has been kept on a very short leash.
Read your O1 to know whether the book is a mirror or a gym. If it runs high, Read is describing the inner life you already inhabit and giving it a history and a dignity. If it runs low, the useful claim is that the vividness you assume you lack is more available than you think, less a fixed trait than an atrophied one, and the exercises are just ways to stop starving it. The imagination sees what is not there. It cannot do that if you never give it the quiet to look.
Read the book: The Imagination Muscle: Where Good Ideas Come From (And How to Have More of Them) by Albert Read.
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Research Citations
Read, A. (2024). The imagination muscle: Where good ideas come from (and how to have more of them). Constable.
McCrae, R. R. (1987). Creativity, divergent thinking, and openness to experience. Journal of Personality and Social Psychology, 52(6), 1258-1265.
Johnson, J. A. (2014). Measuring thirty facets of the Five Factor Model with a 120-item public domain inventory: Development of the IPIP-NEO-120. Journal of Research in Personality, 51, 78-89.
Costa, P. T., & McCrae, R. R. (1992). Revised NEO Personality Inventory (NEO-PI-R) professional manual. Psychological Assessment Resources.