സ്ഥൂലഭാവങ്ങൾ ഏതാനും നിമിഷങ്ങൾ വരെ മുഖത്തുണ്ടാകും, അതുവഴി ഏറെക്കുറെ എല്ലാവര്ക്കും അവ വ്യക്തമായി മുഖത്ത്നിന്ന് തന്നെ മനസിലാക്കാനാവുകയും ചെയ്യുന്നു.
స్థూల వ్యక్తీకరణలు కొన్ని క్షణాల పాటు మన ముఖం మీద కనబడతాయి, కాబట్టి చాలామంది సులువుగా వాటిని అర్థం చేసుకోగలరు.