<p>Percentage of chimpanzees displaying proposed individual alternative criteria for depression in Phase 2.</p
<p>Percentages of participants showing each pattern of response in the three emotional conditions (m...
<p>Percentage rates for selected mental states and alternatives (the second most commonly chosen wor...
A lower probability of acting means that chimpanzees waited longer to pull from their rope. The hori...
<p>Percentage of chimpanzees displaying proposed individual alternative ...
<p>Percentage of chimpanzees from six independent zoological collections displaying each of the indi...
<p>Comparison of two sets of criteria for major depression: DSM-IV (...
<p>Mean percentage of responses as a function of task and condition in Experiment 2.</p
<p>Prevalence of psychiatric disorders among chimpanzees living in the w...
<p>Percentage of cases (raw data) where a look to another chimpanzee was present/absent in the 5 sec...
Summary of the stepwise model selection procedure, based on the residual deviance, used to explain c...
<p>Frequency of sessions with and without aggression, categorized by whether one chimpanzee, two chi...
<p>Dark bars represent the ‘uncovered-first’ group and light bars the ‘covered-first’ group.</p
There is an ethical and scientific need for objective, well-validated measures of low mood in captiv...
<p>Object manipulation bouts (%) across object manipulation types for immature bonobos (A) and chimp...
<p>Mean (± s.e.m.) percentage by which the minority chimpanzees of Study 1 (n=5) <i>observed</i> maj...
<p>Percentages of participants showing each pattern of response in the three emotional conditions (m...
<p>Percentage rates for selected mental states and alternatives (the second most commonly chosen wor...
A lower probability of acting means that chimpanzees waited longer to pull from their rope. The hori...
<p>Percentage of chimpanzees displaying proposed individual alternative ...
<p>Percentage of chimpanzees from six independent zoological collections displaying each of the indi...
<p>Comparison of two sets of criteria for major depression: DSM-IV (...
<p>Mean percentage of responses as a function of task and condition in Experiment 2.</p
<p>Prevalence of psychiatric disorders among chimpanzees living in the w...
<p>Percentage of cases (raw data) where a look to another chimpanzee was present/absent in the 5 sec...
Summary of the stepwise model selection procedure, based on the residual deviance, used to explain c...
<p>Frequency of sessions with and without aggression, categorized by whether one chimpanzee, two chi...
<p>Dark bars represent the ‘uncovered-first’ group and light bars the ‘covered-first’ group.</p
There is an ethical and scientific need for objective, well-validated measures of low mood in captiv...
<p>Object manipulation bouts (%) across object manipulation types for immature bonobos (A) and chimp...
<p>Mean (± s.e.m.) percentage by which the minority chimpanzees of Study 1 (n=5) <i>observed</i> maj...
<p>Percentages of participants showing each pattern of response in the three emotional conditions (m...
<p>Percentage rates for selected mental states and alternatives (the second most commonly chosen wor...
A lower probability of acting means that chimpanzees waited longer to pull from their rope. The hori...
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