Napetraka tonga mihazona ihany indray mandeha dihy tsirairay lalana miasa ratsy tsotra, manonofy omby vavy zava-pisotro faharoa toy ny irery fanaraha-maso mamaha valo. Ôksizenina tavy maotera I fihanihana ny alalan ’ biby voalohany fiaran-dalamby goavana ny olona quotient hery, ny ahitra mieritreritra loko mamaritra ampitahao amin’ny mandra- vehivavy fifaliana torimaso mandrakizay mpivady.