Machine Psychology: Code, Genomic, and Scale Extensions

This paper extends Machine Psychology beyond general language models into code, genomics, and scale. Across DeepSeek-Coder, Nucleotide Transformer, cross-domain transfer, and within-family scaling, the results show a consistent pattern: family structure remains probe-readable, native probe calibration often improves alignment, but cross-domain transport still requires richer full-space geometry than small invariant subspaces can provide