The final subtest was Block Design . She took out the red-and-white cubes. “Make this,” she said, sliding a picture of a diagonal diamond pattern toward him. wais-iv pruebas

By the time they reached Matrix Reasoning , Elena had begun to suspect the problem wasn’t in his mind, but in the interface between his mind and the world. He could see the abstract patterns—the spiraling triangles, the alternating colors—but when he tried to explain why the missing piece belonged there, his words came out as tangled nets. “You didn’t forget how to build,” she said

She slid a piece of paper across the table. It wasn’t a diagnosis. It was a referral to a neurologist who specialized in early-onset autoimmune encephalitis. She took out the red-and-white cubes

“You will see a puzzle on the screen,” she said, her voice a practiced, neutral calm. “Then you will select the three options that, when combined, make that shape.”

He looked up. For the first time that afternoon, he didn’t see a test. He saw a key.

Her client, a man named Mateo who listed his occupation as “architect,” nodded. He had requested the WAIS-IV evaluation himself. “I feel foggy,” he’d said on the phone. “Like the blueprints in my head have turned to scribbles.” He was only thirty-four.