Anxiety and interoceptive accuracy – the ability to perceive body signals, play an important role in cognitive processes such as decision-making and also in some influential theories such as the somatic marker hypothesis. The aim of this study was to investigate the relationship between two aspects of anxiety (anxiety as a personality trait and anxiety sensitivity), interoceptive accuracy measured by Schandry’s heartbeat counting task and the percentage of choosing an advantageous symbol probabilistic task consisting of two blocks in which participants choose between two symbols in order to maximize their score. 83 subjects participated in research (64 women and 19 men), with ages ranging from 20 to 77 years. The participants completed two questionnaires (measures of trait anxiety and anxiety sensitivity) and participated in inceroceptive accuracy task in which they have to mentally and without any help count their heartbeats in six time intervals (2x25 sec, 2x35 sec i 2x 40 sec). In the third part, participants performed a computer task consisting of two blocks of 80 trials. In each trial, two symbols appeared on the screen and participants had to choose one of them by pressing a certain key. After pressing they received a feedback about winning or losing points based on which participants had to learn reward and punishment distribution and choose symbols in order to gain as many points as possible. The results show a positive correlation between measures of trait anxiety and anxiety sensitivity, but other variables are not correlated. There is no significant difference in interoceptive accuracy between participants with different levels of anxiety and anxiety sensitivity. In the first block of probabilistic task there is no difference in percentage of choosing advantageous symbol between participants with different levels of anxiety and interoceptive accuracy, but in the second block there is a significant main effect of anxiety on percentage of choosing an advantageous symbol. More anxious participants choose more advantegeous symbol compared to less anxious participants. There is also a significant interaction effect of anxiety and interoceptive accuracy: more anxious participants with good interoceptive accuracy have the biggest percentage of choosing an advantegeous symbol, whereas less anxious participants with bad interoceptive accuracy have the smallest percentage of choosing an advantegeous symbol. Results support the assumption of cognitive biases among anxious people and also support the idea of somatic markers which direct decision-making process in ambiguous situations.